In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

This Niagara Falls tourist trap is a world bright with neon and curiosities that will inspire love, hate, or a mixture of both.

After the attack on Pearl Harbor, rocks and fossils from every U.S. state were collected into a pyramid of national unity.

This set of rickety spaceships are prepared to give alien travelers a place to relax and go to the bathroom.

One of the oldest living oak trees in the Southeast.

The highest point in Alabama was almost completely deforested, but is now home to protected towers and trees.

Every day a troupe of pampered water fowl walk the red carpet to their favorite fountain.

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

The first declared National Monument in the United States.

The farthest you can be in the contiguous U.S. from a McDonald's location.

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

This prehistoric sinkhole lured exclusively male mammoths to their death, much to the delight of science.

Population: 1.

Atlanta's strange assortment of concrete pillars inspires reflection in some, confusion in others.

Scattered around Atlanta are little doors with big charm.

The neon signs from Las Vegas' past find their final resting place at this unusual graveyard.

Healing Springs that once ran red with soldiers' blood.

The semi-reclaimed ruins of this canal were once part of an ambitious plan to reroute the mighty potomac.

With over 100 jam-packed rooms to explore plus elaborate tea services and events, the Mansion on O Street is a hidden treasure.

The highest point in Tennessee, Clingmans Dome bears witness to the ravages of one type of insect.

This intricate Hindu temple is the largest of its kind outside of India itself and was constructed like a giant puzzle.

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

This homegrown adoption center offers a wonderland of feline companionship.

Inspired by a foil-wrapped potato, (seriously) the Markel Building has been deemed one of the 10 ugliest buildings in the world.