You must take the A train... to the last active cemetery in Manhattan.

Walking around West Harlem reveals a scavenger hunt of beautiful bird murals.

This Manhattan museum houses one of the largest collections of Spanish art and manuscripts outside of Spain.

Yo, Adrian!

The world’s first penitentiary, meant to be humane, drove men insane.

Dr Barnes' $25 billion private collection of art and arboretum.

America's most famous museum of medical oddities is home to the remains of Albert Einstein's brain.

This Cambodian riverbed is covered in ancient Hindu carvings both above and below the waters.

Hoax, mistake, or evidence of dinosaurs in human times?

A battle between nature and architecture in the Cambodian jungle.

A Guinness World Record-holding social enterprise whose shows don't shy away from heavy themes.

This statue once earned the distinction as one of the "Three Major Disappointments of the World."

This huge, disused viaduct is now a crumbling concrete underworld of covered in years of graffiti.

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

The home of one of California's most important horticulturalists wilts amidst a lovely park.

Thousands of bottles that have held everything from poison to perfume make up the collection of this small museum.

The lost town of Neversink, sunk by New York City.

This Central New York ghost town was once a prosperous railroad community.

A museum dedicated to exhibiting remarkable outsider art.

An eerie, abandoned military base engulfed by nature and graffiti is now home to a local park.

Home to items never before seen by the public.

A museum cafe showcases Native American dishes and indigenous ingredients from across the Western Hemisphere.

At 207 feet, one of the world's longest continuous escalators.

This stunning blue and gold room changed cities twice before becoming part of the Smithsonian.