Smithsonian Channel Follow the meteoric rise of the Macedonian conqueror who seized Egypt and built an empire that stretched from Europe to Asia; find out how founding the city of Alexandria and becoming a pharaoh transformed Alexander's life before his death at age 32. 2026-09-03 Explore three discoveries that change what we know about magic and superstition; delve into a Polish vampire grave, open a UK witch bottle used to ward off evil, and see if alien-like skulls in Mexico were shaped by humans or otherworldly beings. 2026-09-03 The Pyramid of Khufu is the only one of the Seven Wonders of the Ancient World which can still be seen in its original state. 2026-09-03 Follow the meteoric rise of the Macedonian conqueror who seized Egypt and built an empire that stretched from Europe to Asia; find out how founding the city of Alexandria and becoming a pharaoh transformed Alexander's life before his death at age 32. 2026-09-03 Explore three discoveries that change what we know about magic and superstition; delve into a Polish vampire grave, open a UK witch bottle used to ward off evil, and see if alien-like skulls in Mexico were shaped by humans or otherworldly beings. 2026-09-03 The Pyramid of Khufu is the only one of the Seven Wonders of the Ancient World which can still be seen in its original state. 2026-09-03 Follow the meteoric rise of the Macedonian conqueror who seized Egypt and built an empire that stretched from Europe to Asia; find out how founding the city of Alexandria and becoming a pharaoh transformed Alexander's life before his death at age 32. 2026-09-03 Explore three discoveries that change what we know about magic and superstition; delve into a Polish vampire grave, open a UK witch bottle used to ward off evil, and see if alien-like skulls in Mexico were shaped by humans or otherworldly beings. 2026-09-03 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. 2026-09-03 Diving into retrofits on the world's only underwater habitat, where NASA astronauts train for space missions; Mike joins a crack repair team who breathe new life into this oceanic environment after a global pandemic shut it down. 2026-09-03 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. 2026-09-03 Explores strongholds abandoned by their architects; a lost city in the Amazon jungle; a desert fortress made by humanity's most notorious empire; explores a city of identical castles; examines a Greek isle's bloody history from the air. 2026-09-03 A mysterious object is raised from the depths of the ocean; a stranded speedboat; an elite crew works to salvage America's biggest shipwreck before hurricane season. 2026-09-03 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. 2026-09-03 Explores strongholds abandoned by their architects; a lost city in the Amazon jungle; a desert fortress made by humanity's most notorious empire; explores a city of identical castles; examines a Greek isle's bloody history from the air. 2026-09-03 A mysterious object is raised from the depths of the ocean; a stranded speedboat; an elite crew works to salvage America's biggest shipwreck before hurricane season. 2026-09-03 Traveling from Canada to Belgium to the Southern U.S. to examine an eye-popping school, museum and railway station and reveal how they were built. 2026-09-03 Mike joins the U.S. Marines' Heavy Haulers helicopter squadron and gets inside their battle to keep a fleet of souped-up Sikorsky CH-53E Super Stallion choppers flying as they prepare for intense war games in the desert and mountains. 2026-09-03 During World War II, the B-17 became a formidable fortress of the skies; uncover the technological and strategic innovations that made the B-17 a key to D-Day success, and later, Allied victory. 2026-09-03 Valentine's Day delays loom when a squadron of F-22 makes an unexpected landing; high winds threaten a helicopter's 600-lb sling load; Aviators come to the rescue of a village without water. 2026-09-03 Southern Mexico stretches from Yucatán's crystal-clear cenotes to the fertile land of the Oaxaca Valley; Maya and Zapotec traditions live through gastronomy and art; history is ever present in ancient pyramids and architecture. 2026-09-03 Follow the meteoric rise of the Macedonian conqueror who seized Egypt and built an empire that stretched from Europe to Asia; find out how founding the city of Alexandria and becoming a pharaoh transformed Alexander's life before his death at age 32. 2026-09-03 Explore three discoveries that change what we know about magic and superstition; delve into a Polish vampire grave, open a UK witch bottle used to ward off evil, and see if alien-like skulls in Mexico were shaped by humans or otherworldly beings. 2026-09-03 The Pyramid of Khufu is the only one of the Seven Wonders of the Ancient World which can still be seen in its original state. 2026-09-03 Unlock the secrets of Newgrange, a 5,000-year-old Irish tomb aligned with the winter solstice sun; analyze DNA evidence that reveals a powerful, incestuous dynastic bloodline and suggests that this monument was built to honor a lost ruling class. 2026-09-04 Unravel the mysterious decline of Angkor, the Khmer capital that was a marvel of urban engineering for 600 years. Hunt for secrets hidden in the mud that could explain how the population of this Cambodian imperial city vanished without a trace. 2026-09-04 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. 2026-09-04 Unlock the secrets of Newgrange, a 5,000-year-old Irish tomb aligned with the winter solstice sun; analyze DNA evidence that reveals a powerful, incestuous dynastic bloodline and suggests that this monument was built to honor a lost ruling class. 2026-09-04 Unravel the mysterious decline of Angkor, the Khmer capital that was a marvel of urban engineering for 600 years. Hunt for secrets hidden in the mud that could explain how the population of this Cambodian imperial city vanished without a trace. 2026-09-04 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. 2026-09-04 Unlock the secrets of Newgrange, a 5,000-year-old Irish tomb aligned with the winter solstice sun; analyze DNA evidence that reveals a powerful, incestuous dynastic bloodline and suggests that this monument was built to honor a lost ruling class. 2026-09-04 Unravel the mysterious decline of Angkor, the Khmer capital that was a marvel of urban engineering for 600 years. Hunt for secrets hidden in the mud that could explain how the population of this Cambodian imperial city vanished without a trace. 2026-09-04 Traveling from Canada to Belgium to the Southern U.S. to examine an eye-popping school, museum and railway station and reveal how they were built. 2026-09-04 Mike joins the U.S. Marines' Heavy Haulers helicopter squadron and gets inside their battle to keep a fleet of souped-up Sikorsky CH-53E Super Stallion choppers flying as they prepare for intense war games in the desert and mountains. 2026-09-04 A breathtaking journey down the German section of the beautiful Moselle river, famous for vineyards on its dramatically steep banks and remarkable meandering loops. 2026-09-04 Peek at landmarks in places where they shouldn't be; wing your way over an imperial pyramid in the Netherlands, a metal sphere in remote Russia, a lion shape carved into an English hillside and a bare swath cut through an Austrian forest. 2026-09-04 A salvage maestro returns to raise more valuable tropical hardwood trying not to wreck his own boat in the process; the multimillion dollar operation to salvage America's biggest shipwreck. 2026-09-04 A breathtaking journey down the German section of the beautiful Moselle river, famous for vineyards on its dramatically steep banks and remarkable meandering loops. 2026-09-04 Peek at landmarks in places where they shouldn't be; wing your way over an imperial pyramid in the Netherlands, a metal sphere in remote Russia, a lion shape carved into an English hillside and a bare swath cut through an Austrian forest. 2026-09-04 A salvage maestro returns to raise more valuable tropical hardwood trying not to wreck his own boat in the process; the multimillion dollar operation to salvage America's biggest shipwreck. 2026-09-04 Uncovering the design and engineering secrets behind the Grand Canyon Skywalk, the Audain Museum and more. 2026-09-04 Mike Davidson goes on a cross-country road trip to help the Well Done Foundation; they work to find and cap some of the estimated 2 million leaking, toxic abandoned oil and gas wells scattered throughout the U.S. 2026-09-04 Follow the meteoric rise of the Macedonian conqueror who seized Egypt and built an empire that stretched from Europe to Asia; find out how founding the city of Alexandria and becoming a pharaoh transformed Alexander's life before his death at age 32. 2026-09-04 Explore three discoveries that change what we know about magic and superstition; delve into a Polish vampire grave, open a UK witch bottle used to ward off evil, and see if alien-like skulls in Mexico were shaped by humans or otherworldly beings. 2026-09-04 The Pyramid of Khufu is the only one of the Seven Wonders of the Ancient World which can still be seen in its original state. 2026-09-04 Unlock the secrets of Newgrange, a 5,000-year-old Irish tomb aligned with the winter solstice sun; analyze DNA evidence that reveals a powerful, incestuous dynastic bloodline and suggests that this monument was built to honor a lost ruling class. 2026-09-04 Unravel the mysterious decline of Angkor, the Khmer capital that was a marvel of urban engineering for 600 years. Hunt for secrets hidden in the mud that could explain how the population of this Cambodian imperial city vanished without a trace. 2026-09-04 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. 2026-09-04 Discover why the desire to capture Nazi weapon technology turns the U.S. and USSR from WW II allies into Cold War enemies; look at how the superpowers try to gain an Arctic foothold, from guerrilla warfare to intelligence schemes to nuclear arms. 2026-09-05