This might just be the TARDIS of bookstores.

This palatial botanical garden is home to one of the largest pipe organs ever installed in a private residence, and a piece of Wood's cycad.

The Dover International Speedway is home to a towering, concrete-skinned, racecar-hungry behemoth.

World War II-era bunkers are hidden under the beaches of this picturesque park, which is still scattered with wartime watchtowers.

The historic home still shows the scars from a little run-in with the British in 1813.

What began as an art installation is now the private drinkhaüs for a brewery's employees.

A mysterious "wedding cake" castle in the middle of the urban desert.

A Norwegian-born sculptor created these soaring guardian angels at the entrance to Hoover Dam.

A Saint Nicholas-themed ghost town in the Mojave desert.

All of the 20 occupied houses in this mostly abandoned town feature some curious display of junk art.

Electrical pylon in the shape of Disney's beloved mouse.

After the attack on Pearl Harbor, rocks and fossils from every U.S. state were collected into a pyramid of national unity.

San Diego's most historic and haunted home.

The stone marker that Mason and Dixon placed at the eastern end of the famous north-south border they surveyed.

The third version of this tall sailing ship sits, rusted and burnt, in Lake Ontario.

This "Palace of Purification" has made many film appearances as a dark and sinister headquarters.

The oldest landmark of Toronto is a testament to shifting sands.

Soaring over the Niagara Whirlpool since 1916.

With well over 130 falls and cascades to brag about, Hamilton, Ontario has earned its stripes as the waterfall capital of the world.

Only hotel where you can legally launder money.

One of few lasting examples of the brief octagon craze that developed into folly.

The giant pair of sexy legs sticking out the window of this costume store have become its main draw.

The last remaining relic of San Francisco's glittering 1915 Panama Pacific Exposition.

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.