Smithsonian Channel

Ramesses II reigns for 66 years and builds monuments and temples.

Takes a look inside the Pyramid of Menkaure and its unfinished bicolor monument, including a chamber made entirely of graphite and a sarcophagus buried at sea.

Exceptional texts are inscribed on the walls of an obscure pyramid; experts scan the funerary chamber of Egypt's longest-reigning pharaoh to try to uncover its mysteries.

The Black Pyramid is a decaying brick-and-clay structure that contains an elaborate network of tunnels filled with ancient artifacts; Egyptologists use a mini-laser to uncover the mysteries contained within.

Traipsing along ancient pathways crisscrossing Easter Island; finding gigantic designs carved into Asia's Eastern Steppe; ascending a tall pyramid rising from Antarctica's icy landscape.

The journey down the attraction-packed Niagara River is filled with adventure and beauty; navigating the fascinating history and engineering of this border river between Canada and the United States, arriving at the world-famous Niagara Falls.

Exploring some of the most cavernous places on the planet, including an expansive Siberian crater with no explainable origin, Greenland's bizarre black holes, an ancient forbidden well in the Yemeni desert, and a voluminous void in Antarctica.

The team must remove thousands of wrecked cars from the hull before it becomes an environmental disaster; repairing a vessel before the waters of the River Solent flood the hull.

Jupiter, Saturn, Uranus and Neptune all have exotic atmospheres, liquid interiors and rings.

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Exploring some of the most cavernous places on the planet, including an expansive Siberian crater with no explainable origin, Greenland's bizarre black holes, an ancient forbidden well in the Yemeni desert, and a voluminous void in Antarctica.

The team must remove thousands of wrecked cars from the hull before it becomes an environmental disaster; repairing a vessel before the waters of the River Solent flood the hull.

Look into the strange disappearance of the Lost Colony of Roanoke in 1590, then discover how the Hope Diamond was stolen during the French Revolution; pinpoint new clues that could explain why the USS Cyclops vanished in 1918 in the Bermuda Triangle.

Contemplate the strange disappearance and reappearance of the master of macabre, Edgar Allan Poe, just before his death in 1849; explore the chilling rumor that Shakespeare's grave was robbed, then chase down thieves who stole the Mona Lisa in 1911.

Visiting the Hearst Tower in Manhattan and Jewel Changi Airport in Singapore to understand how they were built; covering how designers and engineers attempt to create a museum worthy of Salvador Dalí in Florida.

Takes a look inside the Pyramid of Menkaure and its unfinished bicolor monument, including a chamber made entirely of graphite and a sarcophagus buried at sea.

Ramesses II reigns for 66 years and builds monuments and temples.

Visiting the Hearst Tower in Manhattan and Jewel Changi Airport in Singapore to understand how they were built; covering how designers and engineers attempt to create a museum worthy of Salvador Dalí in Florida.

Takes a look inside the Pyramid of Menkaure and its unfinished bicolor monument, including a chamber made entirely of graphite and a sarcophagus buried at sea.

Ramesses II reigns for 66 years and builds monuments and temples.

Dive beneath the Bay of Naples to explore Baiae, a submerged playground of the Roman elite; see high-resolution sonar expose sunken imperial villas and ornate baths, revealing a city of scandal and luxury that was engulfed by volcanic fury.

Rethink what it's known about death and preservation; see why Denmark's perfectly preserved Tollund Man raises questions, observe Portuguese bodies that rewrite history, and uncover the mystery of Scotland's Frankenstein mummies.

Hunt for the Amber Room, a Nazi-looted treasure that disappeared in 1944; track the final flight of bandleader Glenn Miller over the English Channel, then re-examine the arrest of Anne Frank to see if she was betrayed or a victim of coincidence.

Dive beneath the Bay of Naples to explore Baiae, a submerged playground of the Roman elite; see high-resolution sonar expose sunken imperial villas and ornate baths, revealing a city of scandal and luxury that was engulfed by volcanic fury.

Rethink what it's known about death and preservation; see why Denmark's perfectly preserved Tollund Man raises questions, observe Portuguese bodies that rewrite history, and uncover the mystery of Scotland's Frankenstein mummies.

Hunt for the Amber Room, a Nazi-looted treasure that disappeared in 1944; track the final flight of bandleader Glenn Miller over the English Channel, then re-examine the arrest of Anne Frank to see if she was betrayed or a victim of coincidence.

Dive beneath the Bay of Naples to explore Baiae, a submerged playground of the Roman elite; see high-resolution sonar expose sunken imperial villas and ornate baths, revealing a city of scandal and luxury that was engulfed by volcanic fury.

Look into the strange disappearance of the Lost Colony of Roanoke in 1590, then discover how the Hope Diamond was stolen during the French Revolution; pinpoint new clues that could explain why the USS Cyclops vanished in 1918 in the Bermuda Triangle.

Contemplate the strange disappearance and reappearance of the master of macabre, Edgar Allan Poe, just before his death in 1849; explore the chilling rumor that Shakespeare's grave was robbed, then chase down thieves who stole the Mona Lisa in 1911.

Exploring some of the most cavernous places on the planet, including an expansive Siberian crater with no explainable origin, Greenland's bizarre black holes, an ancient forbidden well in the Yemeni desert, and a voluminous void in Antarctica.

A breathtaking journey down the German section of the beautiful Moselle river, famous for vineyards on its dramatically steep banks and remarkable meandering loops.

A perfect circle carved around an ancient peak; a scary phenomenon in the Pacific; strange shapes in a Middle Eastern desert; a formation below the ocean's surface.

Salvage crews work to install the world's largest environmental protection barrier; flying into a highly volatile region, crews battle pirates, tornadoes, and riots to salvage a wrecked cargo ship.

A breathtaking journey down the German section of the beautiful Moselle river, famous for vineyards on its dramatically steep banks and remarkable meandering loops.

A perfect circle carved around an ancient peak; a scary phenomenon in the Pacific; strange shapes in a Middle Eastern desert; a formation below the ocean's surface.

Salvage crews work to install the world's largest environmental protection barrier; flying into a highly volatile region, crews battle pirates, tornadoes, and riots to salvage a wrecked cargo ship.

Investigate the sudden death of a tycoon linked to King Tut's tomb; search for three lighthouse keepers who vanished from the Flannan Isles, then analyze the gruesome, unexplained deaths of nine hikers at the Dyatlov Pass in the Ural Mountains.

Uncover how a royal imprisoned two princes and took the British throne; ponder how the Irish crown jewels were stolen from a locked safe inside Dublin Castle, then see if the death of Amy Robsart at Elizabeth I's court was an accident or murder.

Dive beneath the Bay of Naples to explore Baiae, a submerged playground of the Roman elite; see high-resolution sonar expose sunken imperial villas and ornate baths, revealing a city of scandal and luxury that was engulfed by volcanic fury.

Rethink what it's known about death and preservation; see why Denmark's perfectly preserved Tollund Man raises questions, observe Portuguese bodies that rewrite history, and uncover the mystery of Scotland's Frankenstein mummies.

Hunt for the Amber Room, a Nazi-looted treasure that disappeared in 1944; track the final flight of bandleader Glenn Miller over the English Channel, then re-examine the arrest of Anne Frank to see if she was betrayed or a victim of coincidence.

Dive beneath the Bay of Naples to explore Baiae, a submerged playground of the Roman elite; see high-resolution sonar expose sunken imperial villas and ornate baths, revealing a city of scandal and luxury that was engulfed by volcanic fury.

Rethink what it's known about death and preservation; see why Denmark's perfectly preserved Tollund Man raises questions, observe Portuguese bodies that rewrite history, and uncover the mystery of Scotland's Frankenstein mummies.

Hunt for the Amber Room, a Nazi-looted treasure that disappeared in 1944; track the final flight of bandleader Glenn Miller over the English Channel, then re-examine the arrest of Anne Frank to see if she was betrayed or a victim of coincidence.

The Nazis appeared to work together from a distance, but behind the scenes it was different with nepotism, corruption and fear running rampant.

The history of the Russian MiG, American air power's fiercest rival for more than 50 years.

Examine the chilling precision of three high-profile assassinations. Uncover the technology behind a bladed missile, investigate a deadly car bomb in the American capital, and review CCTV footage of a nerve agent attack in a crowded airport.

The Nazis appeared to work together from a distance, but behind the scenes it was different with nepotism, corruption and fear running rampant.

The history of the Russian MiG, American air power's fiercest rival for more than 50 years.

Examine the chilling precision of three high-profile assassinations. Uncover the technology behind a bladed missile, investigate a deadly car bomb in the American capital, and review CCTV footage of a nerve agent attack in a crowded airport.

The Nazis appeared to work together from a distance, but behind the scenes it was different with nepotism, corruption and fear running rampant.

Investigate the sudden death of a tycoon linked to King Tut's tomb; search for three lighthouse keepers who vanished from the Flannan Isles, then analyze the gruesome, unexplained deaths of nine hikers at the Dyatlov Pass in the Ural Mountains.

Uncover how a royal imprisoned two princes and took the British throne; ponder how the Irish crown jewels were stolen from a locked safe inside Dublin Castle, then see if the death of Amy Robsart at Elizabeth I's court was an accident or murder.

The Nazis appeared to work together from a distance, but behind the scenes it was different with nepotism, corruption and fear running rampant.

New York's Hudson River stretches 315 miles through natural landscapes, from the Adirondack Mountains to the George Washington Bridge and Statue of Liberty.

Decoding the secrets of long-lost human settlements; scrutinizing a mysterious Norwegian mound, a prehistoric stone circle on the banks of the Tagus River, a lost city in the cradle of civilization and bizarre rock shapes.

In rough water, salvors scramble to retrieve a cruise ship's anchor lost at sea; teams hope to salvage cherished floating homes damaged by hurricane Sandy.

New York's Hudson River stretches 315 miles through natural landscapes, from the Adirondack Mountains to the George Washington Bridge and Statue of Liberty.

Decoding the secrets of long-lost human settlements; scrutinizing a mysterious Norwegian mound, a prehistoric stone circle on the banks of the Tagus River, a lost city in the cradle of civilization and bizarre rock shapes.

The history of the solar system might be preserved out in the dark domain of Pluto and beyond.

Paid programming.

Investigate one of Egypt's oldest monuments to eternity: the Buried Pyramid of Sekhemkhet; explore a well-preserved underground tomb and view a mysterious sarcophagus during the first-ever on-camera exploration of this 4,500-year-old sacred place.

Visiting the heart of history in the Dahshur necropolis, where the first of the great pyramids was built; examining what a mini-scanner called a LiDAR reveals about this landmark's enduring mysteries.

The Nazis appeared to work together from a distance, but behind the scenes it was different with nepotism, corruption and fear running rampant.

The history of the Russian MiG, American air power's fiercest rival for more than 50 years.

Examine the chilling precision of three high-profile assassinations. Uncover the technology behind a bladed missile, investigate a deadly car bomb in the American capital, and review CCTV footage of a nerve agent attack in a crowded airport.

The Nazis appeared to work together from a distance, but behind the scenes it was different with nepotism, corruption and fear running rampant.

The history of the Russian MiG, American air power's fiercest rival for more than 50 years.

Examine the chilling precision of three high-profile assassinations. Uncover the technology behind a bladed missile, investigate a deadly car bomb in the American capital, and review CCTV footage of a nerve agent attack in a crowded airport.

Discover the German submarines that caused havoc in the American desert, the playboy pilot they couldn't cage, and the young lovers whose escape defied all odds.

When his company attempts to capture a small village, an American soldier, born in Mexico but raised in Texas, must crawl through an enemy minefield to capture two German machine gun nests holding up his unit.

When a body is discovered in a bombed-out London church, investigators race to determine if it was caused by the Nazi Blitz or a local killer.

Discover the German submarines that caused havoc in the American desert, the playboy pilot they couldn't cage, and the young lovers whose escape defied all odds.

When his company attempts to capture a small village, an American soldier, born in Mexico but raised in Texas, must crawl through an enemy minefield to capture two German machine gun nests holding up his unit.