Holding the most bodies of any cemetery in the United States.

Two New York rooftops are home to the largest rooftop soil farms in the world.

Protecting the future of some of the rarest and most misunderstood mammals of North America.

A ruined mansion hidden in the woods of the Hudson Valley, home of a tragically doomed romance.

A clock set into the concrete outside a Manhattan jeweler has been telling time underfoot for over a century.

Neon signs that grace the windows of Bergdorf Goodman's and Tiffany & Co. come from this studio in Brooklyn.

The first and only carousel with a lineup entirely of insects.

The remnants of two World's Fairs are here, complete with a 12-story globe, a mini-Manhattan, and a UFO-shaped pavilion.

Home to the infamous "Typhoid Mary" and the worst loss of life in New York's history prior to September 11, 2001.

The old observatory in Copenhagen has a spiral corridor used as a racetrack.

Climb to the top of its spiral spire for spectacular views of Copenhagen.

This controversial monument was designed to lionize the Red Army, but also disheartened the Latvian people.

An otherworldly alpine pasture with its own unique microculture that recalls Middle Earth.

Martin Bricelj Baraga's monolithic sculpture measures the blueness of the sky, and changes color to match it.

Polish luminaries and masterful folk art find sanctuary in this unique cemetery.

The original burial place of this preeminent 18th-century Jewish philosopher was razed by the Nazis.

A mosaic-tiled house built by graveyard sweeper Raymond Isidore.

One of Amsterdam's narrowest houses is located right across the canal from its widest.

A white Buddhist temple with a golden restroom.

Walk through depictions of the torture inflicted on those who go to Buddhist hell.