A stretch of New Hampshire lake water is the only ice runway in the lower 48 states that is FAA-approved.

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

A former poultry store that looks like a giant duck and is one of the "seven wonders" of Long Island.

Where scientists keep miles of very valuable ice from Antarctica and Greenland from melting.

A forensic lab dedicated to fighting crimes against wildlife.

The oldest church in Iceland is one of the few to feature ornate decoration.

Rising out of a clearing in New Jersey's Pine Barrens is an Aztec-inspired monument to the "Lindbergh of Mexico."

Oldest synagogue in the United States.

Celebrate the history of the rich and truly misunderstood relationship between man and pigeon.

A six-story-tall golden pyramid, surrounded by a moat.

Ancient human, animal, and geometric figures drawn in the earth.

A Norwegian church that was built before Wisconsin was even a state has been entirely moved to a nicer spot.

Berry Gordy Jr.'s old home was the original headquarters of Motown Record Corporation.

This German museum is devoted to all aspects of grave culture from headstones to coffins.

Spanking machines, fake goats, and more devices of humiliation are on display in this museum of fraternal initiation devices.

An organ located deep within a cave, whose "pipes" are the geological features of the cave itself.

The world's 2nd or 3rd or 4th busiest seaplane base.

A replica viking ship from the Chicago World's Fair is still in dry dock in an Illinois park.

This Great Depression-era creation was once known as the strangest house in the world.

England's foremost purveyor of funeral furniture hasn't changed a bit since the 1960s.

A magnificent winding road through a steep valley, with deep natural caverns at the bottom

The remains of a paranoid inventor's hidden workshop lie in beautiful ruins amidst a Canadian park.

The only international border marker within the United States.

These mechanical goats first battled it out in the year 1551, all because of an overcooked deer.