Its floors are marked by colorful cues depicting Michigan's native fauna.

These tiny pine-covered islands have inspired art and poetry for centuries.

This enormous monument is one of the most iconic structures in Tokyo, rudely nicknamed "The Golden Turd."

A plaque marks the site directly below the mid-air detonation of the atomic bomb over Hiroshima.

An eerie reminder to the horrors of World War II.

Peace Park and the Atomic Bomb Dome.

The mounds at this site were reconstructed with the help of archaeologists and historians.

The remains of a massive blast furnace in what was once one of the country's largest iron-producing regions.

A 2,000-year-old Adena burial mound located along a busy street in Columbus, Ohio.

A throwback train ride transports passengers through one of the lesser-known national parks in the country.

Andy Griffith's hometown has made itself up to look like the fictional town of Mayberry.

Two gushing waterfalls of hot spring water within a block of each other.

This historic hotel on Bathhouse Row in Hot Springs National Park has a storied history of gangsters and baseball greats.

The sign that drew attention to a young boy's cucumber stand is now the name of his fruit superstore.

The only swimming pool listed on the National Register of Historic Places is emptied and refilled each day with naturally filtered water.

Located within a historic park, the beacon is the oldest standing structure in Miami.

An enormous warehouse filled with parade floats collected from over 50 years of patriotic celebrations.

An overlooked memorial honoring the local Washington residents who died in World War I.

Disks are rolled out onto the south lawn to absorb the impact of Marine One's wheels like giant coffee coasters.

The lesser-known lost colony of Roanoke was a safe haven for formerly enslaved people during the Civil War.

Inside houses a vast collection of military aircraft and missiles spanning the ages.

A real flying saucer, contracted by the U.S. Air Force.

Trade in that pesky human soul for cold-hard circuits.

A 400-foot-tall tall map of Chicago makes this once-ignored building stand out.