This funicular railway rumbles along for a mile up the nearly vertical face of Chattanooga’s Lookout Mountain.

The mysterious wonder of an underground waterfall is illuminated by multicolored lights.

This statue in Talcott, West Virginia, is an enduring symbol of American grit.

West Virginia’s largest bog is home to rare carnivorous plants.

Sip colonial-era cocktails at this monthly recreation of a 1740 watering hole.

Once part of a dam servicing an early 19th century grist mill, the tucked-way falls are a tricky-to-find urban oasis.

The oldest existing one-room brick schoolhouse in Loudoun County.

A glimpse into early 19th-century education.

A home that witnessed Civil War combat on the Sunken Road has the battle scars to prove it.

This restaurant serves wood-fired fare served in a natural cave with a live spring.

Near the summit of Mount Washington, a stone monument remembers a life lost to one of the mountain's infamous storms.

A lighthouse on this West Virginia lake started as a joke, then the forces of nature helped make it a reality.

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.