One lonely, modern pyramid has gone from corporate think tank to deserted boondoggle.

Performers, intricate sets, and a real speakeasy tell the story of the 18th Amendment.

One of Savannah's oldest and most haunted cemeteries, featuring graves desecrated by Sherman's Union Army.

"X" marks the spot of an echo chamber in the middle of a plaza.

A statue honoring 44 continuous years of greeting passing ships.

This kitschy tavern is also home to rare early editions of "Treasure Island."

The world's smallest park was dedicated in 1948 as the only colony for leprechauns west of Ireland.

The U.S. Navy's last diesel-electric submarine rests half-submerged in the middle of Portland.

The larger of two volcanic peaks rising out of the crystalline waters of the Caribbean.

Come for the springs; stay for the mud bath.

This unassuming cheese empire in rural Oregon churns out more than 150,000 pounds of cheese each day.

A massive sea stack famous for its appearance in The Goonies.

This gorgeous beach hides behind two headlands in Oregon's Ecola State Park.

Continuing the tradition of the dime museum in style.

Home to the largest urban bat colony in North America, estimated at 1.5 million bats.

This unique structure in suburban Austin is made up entirely of other people's castaways, and constantly changing.

A 131-year-old wunderkammer of Texas history.

An ivy-covered arch bridge dedicated to Tejano music singer and legend Rosita Fernandez.

Wading through a small lagoon reveals a secret, wild stretch of pristine beach.

A building so large that it has its own weather.

The unique collection includes bronze cast handprints of some of America's most famous astronauts.

Hell on Earth is actually a small town in Michigan where anyone can be mayor for a day.

What was once the largest NFL stadium.

The Beaux-Arts aquarium boasts a vast collection of saltwater and freshwater fish on an island in the Detroit River.