This sustainable, family-run farm just outside of San Juan makes for a dreamy daytrip.

A place where the laws of nature seem to have gone completely berserk... but of course haven't.

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

One of Scotland's most important modern structures, it just made the '100 Most Endangered Sites' list.

Mummified monks and the accidentally interred, in a 17th-century crypt.

The only structure left with direct ties to the Salem witchcraft trials of 1692.

A toxic ghost town sitting atop a massive coal fire.

Abandoned city hidden from the world by tropical forest and isolation on the coast of Kenya.

An old abandoned mining town in The Adirondacks where Theodore Roosevelt first learned of the shooting of President William McKinley.

An isolated dive site teeming with cnidarians.

The largest island on the great salt lake is home to curious creatures and strange stories.

The vast, legendary catacombs hold secrets much stranger than stacked bones.

A Civil War Museum with some notable medical antiques.

Explore the largest pure gypsum deposit in the world, and go dune sledding while you're at it.

Continuing the tradition of the dime museum in style.

Fantastic collection celebrating the final send-off.

A National Historic Landmark with a scenic clock tower and park filled with deer and peacocks, plus a military museum.

Housed in a century-old building, this museum's dedicated not just to soft drinks, but to the free enterprise system.

An emerald-green grotto just a short trip from Austin.

This hospital fell into ruins after failing to act as the advocate for the mentally ill it was designed to be.

Museum dedicated to the UK's first charity for abandoned children, with keepsakes of the mothers who left them behind.

Eighty million natural history specimens call this gargantuan museum home.

The haunting, dilapidated remains of a former poorhouse on Staten Island's Greenbelt.

A long abandoned hospital building on the outskirts of NYC.