An Australian lake whose pink hue defies scientific explanation.

A painfully obvious spy house sits right across the street from the Russian Embassy.

It's not hard to see why the historic Peabody Conservatory of Music's library has been described as a "cathedral of books."

The spot where the namesake of the Douglas fir met his mysterious end on a Hawaiian volcano.

An ancient instrument used to measure the waters of the Nile so Egyptian farmers would know whether to expect famine or flood.

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

An authentic replica of an Asian temple and garden hidden amongst the natural beauty of Hawai'i.

A century-old cabin off of Highway 30 touts an unusual construction material: dinosaur bones.

The residents of this ominous-sounding street in Pennsylvania liked its name so much they fought to keep it.

The cultural center preserves the history of the Tlingit tribe, who have lived in this Alaska village for more than 10,000 years.

This Hawaiian cattle ranch acts as a museum devoted to the island cowboys that predate the wild west.

Try your hand at old-fashioned coffee growing at this museum devoted to one of the world's most coveted beans.

Get up close and personal with these majestic fish.

Discover the mummified remains of Ancient Egypt in the middle of metropolitan Tokyo.

This stunning, out-of-the-way Croatian monument commemorates a community's uprising against occupying fascist forces.

One of the oldest living oak trees in the Southeast.

Sitting on an Italian hilltop is this surreal fortress built by the mad inventor of electrohomeopathy.

Play everything you see at a museum dedicated to a town's historic organ industry.

The palace of the King of Kings, burned by Alexander the Great.

Crawl through the hole in the middle of this stone to break off a bad relationship or initiate a good one.

This magnificent stepwell is designed as an inverted temple and adorned with 1,500 sculptures.

Now famous as the "Harry Potter bridge," this impressive concrete viaduct has long been an icon in its own right.

The world's longest outdoor covered escalator system transports commuters through Hong Kong's hilly terrain.

This small-town Connecticut restaurant gives each diner a free book from its vast library.