The home of possibly the least-loved U.S. president stands as a sort of unpopular Monticello.

A mine fire has been burning under the deserted town since 1962, but this church is still going strong.

A field of nothing but boulders which resembles a giant's gravel driveway.

A local prank turned town icon.

The remains of a community that was forced to move for a dam that never materialized still rot in this Pennsylvania park.

The first declared National Monument in the United States.

The granddaddy of all tourist traps, built on ice water, jackalopes, and a giant dinosaur.

The world's longest known cave system.

Air Force Academy Chapel made of 100 identical tetrahedrons works to inspire those of all religions.

This abandoned NASA launch site is now a memorial to a trio of astronauts who were killed there.

A building so large that it has its own weather.

A 300-yard long natural tunnel runs through a ridge deep in the Appalachian Mountains.

An organ located deep within a cave, whose "pipes" are the geological features of the cave itself.

A sacred site for Native Americans surveyed by George Washington and owned by both King George III and Thomas Jefferson.

The world's largest fully steerable radio telescope.

This rural community has attracted both scientists and techno-refugees due to its federally-mandated lack of technology.

Take a steam-powered ride straight out of the past on this Appalachian rail line.

One day a year it is legal to jump off of this astoundingly tall bridge that spans an Appalachian gorge.

America's post-nuclear-attack chambers of Congress.

The highest peak in the state of Vermont has some interesting features.

Cryptid lake monster honored with its own monument.

The sweetest graveyard in the world is filled with headstones for dearly de-pinted ice cream flavors.

This recently rediscovered Civil War-era submarine was the first to ever sink an enemy ship.

I-95's Tijuana-style celebration of kitsch at the Carolina border.