An elaborate, hidden model train in the Needham Town Forest.

Located in a beautifully restored ice house, this museum is the result of decades of hard work and devotion to the craft of plumbing.

No one really knows how these old hobby horses got here, but the herd keeps growing.

There’s a secret bunker inside the Brooklyn Bridge, but the city won’t say where.

The hidden "ballroom" under a mansion lake was built by a criminal who ate a cyanide pill during his trial.

Disused seaplane hangar gets a second life as the jaw-dropping home of Estonia's museum of maritime history.

A quarter mile off the coastal tip of Maine you'll find the "Beloved Island" of Franklin Delano Roosevelt.

A wildlife paradise, this island is one of the world’s most important habitats for burrow nesting seabirds.

A clone-tree in Washington Square Park sprung from seeds that went to the Moon and back.

The land is home to swimming ponies and a legendary 18th-century treasure.

The Incredible Hulk, Yoda, Mulder and Scully, and many many others watch over the mean streets of Toronto.

Breathtakingly blue walls shimmer inside the "Glacier Behind the Town."

This collection of unique liquids allows visitors to wander the waters of Iceland's glaciers.

Four alabaster giants contemplate the tides on the shore of Denmark.

The giant scales in this museum can still tell if someone is one of the devil's brides just by weight.

Home to items never before seen by the public.

The oldest (maybe) swimming pool in Iceland is a stunning oasis built into the side of a lush hill.

This beautiful, historic church looks like something out of a simpler past.

Alleyway plaque commemorating the death of a fictional character in The Maltese Falcon, not far from the author's home.

A Texas museum filled with Broncos and Betties.

Frank Lloyd Wright's most iconic home dangles over a Pennsylvania waterfall.

An alleyway plaque is all that remains of the independent Texas' envoy that forgot to pay their rent for over a century.

Ride the subways of yesteryear.

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