It’s all about the Benjamins at this Atlanta museum with interactive exhibits.

This Art-Deco movie palace is the oldest independent cinema in Atlanta.

The remnants of a wooden-hulled fleet built and abandoned in WWI, now home to a thriving ecosystem.

The remains of a failed attempt at medieval nerdery are hidden deep in the woods of Virginia.

Giant busts of 42 U.S. presidents sit, crumbling in a field in Virginia.

Considered by many to be one of the most dangerous highways in Alaska.

The ghostly remains of what was once the world's richest copper mine.

At 238 feet above the bottom of a gorge this span is known as the biggest thrill on the road to McCarthy.

Running under an entire mountain, the longest highway tunnel in North America is kept fresh using portal fans and jet fans.

This WWII-era military installation once held an entire city within its walls - now, its walls are falling down.

This small city where almost everyone lives in the same building can only be reached via North America's longest tunnel.

The capital of the Cayman Islands is a center of offshore banking, but gets battered by blistering hurricanes.

A thriving Black community was destroyed by an angry white mob at this site in 1923.

This underground oasis is one of North America’s most fascinating prehistoric places—and you can scuba dive in it.

This Florida sinkhole hides a rainforest-like micro-environment in its depths.

A real (but thankfully not live) missile stands tall as a monument to the United States military in the small town of Cordele.

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

An abandoned observatory in the middle of the Illinois prairie.

This nondescript tunnel has been featured in a number of iconic movies, from “Roger Rabbit” to “Back to the Future.”

Inside the Wayne County airport is an amazing collection of lights and sounds.

A spectacular remnant of an Adler and Sullivan masterpiece that was destroyed in 1972.

A hot dog stand where the heads are just as hot as the dogs.

One of the largest pieces of scientific equipment ever carried on a NASA space shuttle sits in a Chicago alley.

The final resting place of up to 6,000 Confederate soldiers, the largest mass grave in the Western Hemisphere.