This cemetery has graves dating back to the 17th century, including the city's oldest carved tombstone and an ominous cryptogram.

Under a glass sidewalk lie the remains of some of Manhattan's oldest buildings.

La Monte Young and Marian Zazeela's "Dream House" will immerse you in an ever changing world of sound and light.

The world's largest reflecting pool is just two centimeters deep.

At Monet's beloved home you can still see the Japanese bridge, waterlilies, and weeping willows that were the subjects of some of his most iconic paintings.

Sacked by Vikings, blessed by William the Conqueror, dealt a fatal blow during the French Revolution—these ruins have seen it all.

This abandoned stepwell is one of the largest, deepest, and certainly one of the creepiest in India.

Hidden in the shadow of a rocky fortress is one concubine’s long-forgotten legacy.

An extraordinary "City of Caves" carved from solid stone.

This otherworldly palace-mausoleum complex is the stuff eternal dreams are made of.

The 953 windows undoubtedly make this the world's most beautiful screened porch.

More than half of this Indian palace is drowned but it looks all the more spectacular for it.

Thousands of exquisitely carved stone water storage wells, hundreds of stone steps fill this exquisite medieval stepwell.

A museum dedicated to the history and exploration of both popular music and science fiction.

A walk through the historic city center, under the streets of Seattle.

This charming cobbled backstreet is the most Instagramable street in Paris, much to the residents' annoyance.

One of the last umbrella repair shops in Paris upholds the nostalgic art of umbrella making.

The final resting place of the "father of special effects."

This off-limits room in the National Library of France is home to a system of pneumatic tubes, once used to bring books to readers.

The ruins of a Duke's bucolic dream, where camels once roamed alongside "Dutch" windmills and faux-Italian vineyards.

A counter-culture bookstore like no other hides in plain sight in the streets of Paris.

A winding path built in secret on the edge of the continent.

This family mausoleum is steeped in symbolism and looks more like a fantasy location than a grave.

Acres of natural wonders left behind by a socialite-turned-gardener.