Over 100 lasers, including huge ones that look straight off a sci-fi set.

The ruins of a once-thriving sugarcane plantation that was burned in the Second Seminole War.

A secret, rocky playground hidden amongst the plain white beaches of the Florida coast.

This bell is one of the last remnants of the lost city of Triadelphia.

One of the world's oldest and most massive living organisms is a grove of quaking aspens.

In one of America’s oldest mountain ranges, a long-awaited section of a scenic highway is now open to the public.

One man’s religious convictions led him to build this stone castle meant to withstand an apocalypse.

A total of 14 men held the title of "president" before George Washington—their historical legacies are enshrined in the lobby of a hotel.

An underground mansion with fruit-bearing trees and grapes growing beneath the surface of central California.

A lovely aquatic park built by a one-armed Civil War veteran who made a fortune from lotuses.

A tunnel that brings more than a century of history to life from the deepest parts of the Niagara Gorge.

It wouldn't be long after purchasing this farm, Brown would lead his siege on Harper's Ferry.

When the rain falls, this drain system turns into a musical instrument.

Classy up your Big Mac with bow-tied servers and chandeliers at the world's fanciest McDonald's.

The deepest underground city in Turkey was designed to protect 20,000 people behind massive stone doors.

One of only two sites in the United States containing the remains of Buddha.

The now-abandoned tunnels were built for the transcontinental railroad on the route where the first wagon train entered California.

The first blast furnace in the United States that used coal and coke fuel instead of charcoal to make pig iron.

A common entry point to the Griffith Observatory trail holds its own wonders.

A bookstore with an entire room dedicated to damaged and forlorn comic books.

Visit a replica of the estate where Aaron Burr allegedly plotted a treasonous scheme against the United States.

This former fire tower is now a rustic observatory that offers amazing views of eagles, hawks, and the Appalachian Mountains.

This Colorado fire station has been in continuous operation for more than a century.

You can find America's highest suspension footbridge at Grandfather Mountain in North Carolina.