History HDTV (East) (HISHD)

Some of the world's most iconic sacred temples were built atop the ruins of structures that are far more ancient. Examining what compelled early humans to rebuild in the same places again and again, do these locations hold special power, and could they be points of ancient alien contact. (Repeat).

Millions of people around the world have reported encountering shadowy entities who instill fear, shortness of breath, and even paralysis. (Repeat).

A look at whether aliens could be capable of bending both time and space and whether the UFOs in our skies are not visitors from other planets, but from our own future. (Repeat).

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Secrets of Ancient Egypt revealed. Two Egyptologists explain hieroglyphics, how to construct pyramids, and how to make a mummy among other all-Egypt topics. Experts: Egyptologists Willa Snowbender and Dr. Kate Liszka. (New).

Two historians explain to the panel the perils and triumphs of the Dark Ages, from the Black Death through the invention of Guttenberg's printing press. Experts: Medieval Historians Kersti Francis and Dr. Brett Whalen. (New).

From the world's largest trebuchet to Nazi super cannons, these are the deadly weapons that rain destruction and spread fear on the battlefield. (Repeat).

The gates are open to some of history's most sinister structures. From the terrifying Tower of London to a hotel of horrors, discover the dark secrets hidden within these foreboding fortresses. (Repeat).

The dark origin stories behind some of history's most notorious methods of execution, from the guillotine to the electric chair. (Repeat).

An exploration into the dark art of spy-craft, from the frankenkitty to the umbrella gun, reveals the deadliest spy weapons deployed to gather information and assassinate enemies. (Repeat).

From the axe to the katana, blades wielded by fearsome warriors have forged empires. (Repeat).

Booby traps are wicked devices waiting to kill, whether they're employed to repel treasure hunters, body snatchers, or wartime opponents. (Repeat).

For almost 2000 years, the devout have been fascinated by relics from Jesus Christ's crucifixion, including the wooden cross and iron nails, as well as the crown of thorns and Spear of Destiny. Do these sacred items still exist? If so, where are they? (Repeat).

In the Bible, there are two Arks, both designed by God himself. Both the Ark of the Covenant and Noah's Ark were designed to protect before being lost to history. Researchers have been looking for both for ages. Did either exist and if so, where may they be? (Repeat).

For thousands of years, the quest for immortality has fascinated us with various relics, such as the healing powers of the holy grail, the Fountain of Youth, and the Philosopher's Stone, but they remain elusive and mysterious. (Repeat).

A century ago, shipping packages was slow and shipping overnight was impossible, until two Seattle brothers risk everything to reinvent shipping packages for all; a tenacious Yale graduate creates a world-famous express delivery service. (Repeat).

Founding fathers of the biggest retail stores in the world battle to be the first to innovate, build, and revolutionize the industry. And one of the top businessmen of the 20th century, Sam Walton, will construct the world's largest retail empire. (Repeat).

James Gamble and Harley Procter invent a groundbreaking new soap that revolutionizes America and opens up a market to entrepreneurs, including King Gillette and Jacob Schick, whose bitter rivalry spawns a new billion-dollar industry and changes Americans' daily lives forever. (Repeat).