Macabre astrological automaton clock dating to the late 1400s.

Around 100,000 bodies are buried below the medieval headstones, many of which mark graves with multiple bodies stacked up to 12 deep.

This massive collection of British military artifacts includes the heartbreaking personal letters of the men in the trenches of WWI.

Take a steam-powered ride straight out of the past on this Appalachian rail line.

This fort down the Potomac from Washington, D.C. was once the only defensive fort protecting the capital.

The highest point in Washington state is a volcano covered in glaciers.

The deepest lake in the United States, and once the site of epic destruction that lives on in legends.

For the holidays, the tallest broadcasting tower in the Netherlands turns into one of the world's tallest Christmas trees.

This whimsical castle of grottoes was the labor of love of a French postman, and one of the greatest achievements of outsider architecture.

Despite attempts by local police to discourage it, Beatles-inspired graffiti has been a means for artists to air grievances for decades.

The most famous location in China was home to whole dynasties worth of imperial rulers.

Shipwrecks, ruins, and turtles are all that remain on this haunting Caribbean ghost island.

One part local history, 99 parts gruesome haunted house.

The perfectly preserved underground rooms where Churchill plotted the war against Germany.

Giant, friendly pelicans in Central London, the most unlikely of places.

This one has sailed five times as far as Sir Francis Drake's famous ship.

An "inside out" building in the historical center of Paris, featuring Europe’s largest modern art museum.

Beneath the impressive baroque cathedral that rises from the center of Berlin lies the largest collection of Prussian royals in the world.

One man's exploration of the human form, including the bizarre and delightful "Man Attacked by Babies."

The design of this beautifully crafted building was inspired by Norwegian glaciers.

The de facto symbol of Copenhagen is this bronze fairytale which cannot seem to keep its head for very long.

One of nature's most well-scheduled phenomenons resides in Wyoming's Yellowstone National Park.

The largest hot spring in the United States is, as the name suggests, a stunning show of natural color.

Rumor has it the uncarved lump behind the three famous suffragists is reserved for the first woman president.