This 40-room dwelling tucked within a cliff was built by the basin's prehistoric residents.

The peaceful space is adorned by paintings by the famed abstract artist Mark Rothko.

Legend says if you stick your thumb in the hole and it gets wet your wish will be granted.

This crucial gathering spot along the "hippie trail" still displays old notes between traveling beatniks and backpackers.

A marvel of Byzantine engineering under the streets of Istanbul.

Live a night as a Byzantine King, with a minibar and private jacuzzi.

In this historic region, homes and churches are carved into ancient volcanic rock formations.

A pocket of jungle amidst urban expansion in Panama.

A working steam clock, one of only a few in the world, located in Vancouver's Victorian Gastown.

The ruins of a medieval monastery built on a perilous slope.

A whimsical bridge adorned with decorative dragons.

A statue in Budapest's Liberty Square honors the former U.S. president's efforts to end the Cold War.

Some of the greatest minds in the history of Hungarian art and science converged in this café.

Budapest's Communist-era statues, banished to the suburbs.

Built in 1870 at the bridge that connected Buda and Pest, this spectacular incline railway was almost lost forever during World War II.

A trail of iron footwear stands as a monument to the thousands executed along this riverbank during WWII.

This 135-year-old weather station studied the effects of the climate on human health.

The location of the world's first telescope demonstration.

Lumps of significant stone from around the world surround a flaming monument for peace.

In one of the smallest countries in the world stands an original Salvador Dalí sculpture.

The oldest continuously occupied public building in the United States.

A man throwing a giant severed hand towers over Antwerp’s main square.

A little sculpture with a large wardrobe.

Meet the bronze beloved pet to a family of famous peeing statues.