The air force base preserves its scars from the Japanese attack on Pearl Harbor.

Take shelter from Hawai'i's tropical heat under the massive canopy of largest Banyan tree on the island.

The only royal palace on U.S. soil has been a territorial capitol, a military headquarters, and a prison for a queen.

These ancient sacred grounds granted amnesty to those who managed to reach them.

A monument celebrating the idea of reaching inaccessible places.

This staircase in a lush tropical grotto was built by enslaved laborers and renamed to honor Queen Victoria's role in ending slavery in the British Empire.

Millions of glowing microscopic organisms light up the waters of this luminous lagoon.

Located in Nairobi National Park, this animal orphanage is the oldest of its kind in Kenya.

A historic and oft-filmed prison stands in a Chicago suburb.

To find the "unicorns of the deep" you've got to go downstairs.

Illegal drag racing two stories beneath Chicago’s streets.

The unluckiest U-boat in the entire German fleet is now on display in a Chicago museum.

This $3 million model train takes you through Chicago, Seattle, and the thousands of miles in between.

At Chicago's revered Field Museum, visitors are invited to learn about and literally explore DNA.

A museum dedicated to the history and exploration of both popular music and science fiction.

This rare vessel mixed luxury with labor before being converted to a museum and sometimes haunted maze.

Gambling, boozing, and yodeling animals cover the walls of this dive bar cum natural history museum.

Oversized statues are just the tip of this nostalgic Americana roadside attraction.

A collection of outdoor art by renowned muralist Robert Dafford depicts the history of a flooded city.

Even with its slightly risible name this colossal cross is still able to inspire awe.

You have to love a museum with a truly dedicated focus. A focus on Superman, for example.

River pirates, murderous bandits, and serial killers used this Illinois cave as their debauched hideout.

A chilling disappearance (and rescue) of a child uncovers a geological mystery.

It was originally part of a "terrible lizards" collection at the 1964 New York World’s Fair.