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

Oldest existing wire suspension bridge in the United States.

Wedged between streets and buildings, this ancient Roman theatre could seat 7000 spectators.

This elegant black and white striped arch is emblematic of Catania's resilience to natural disasters

142 ceramic steps become a mosaic once a year.

A small cave hidden deep within the Jenny Jump State Forest.

This park contains a number of standing stones meant to heal and inspire.

Come for the history lesson, stay for the mule-pulled boat rides.

Dedicated to one of the most successful boxers to compete in the heavyweight division.

This national landmark is also home to a massive treehouse.

The last of nine massive kilns that produced many of the red bricks for buildings in Washington, D.C. and northern Virginia in the early 20th century.

The remains of a failed attempt at medieval nerdery are hidden deep in the woods of Virginia.

These massive concrete balls were used to mine gold in Virginia.

Forget Hollywood, one of the biggest stars in the world can be found in Roanoke, Virginia.

The ruins of this Thomas-Jefferson-designed mansion have been left to crumble since the Christmas Day they burnt down.

This 29-ton granite ball spins around at the slightest touch thanks to a scientific phenomenon.

Giant busts of 42 U.S. presidents sit, crumbling in a field in Virginia.

This cannonball stands as a reminder of the final act of a fleeting governor amidst a revolution.

A lightship turned museum, outfitted with artifacts from the vessel's past as part of the U.S. Lighthouse Service.

A cement mixer-turned-kaleidoscope in downtown Norfolk offers different views of the city.

This environmental engineering marvel keeps salt water from the Elizabeth River.

Nine of the very few concrete ships ever made in the U.S. are beautifully decaying off a Virginia pier.

This bright yellow relic is the final survivor of a short burst of seashell-shaped petrol pumps.

Don't be surprised if you see a long-necked dinosaur peeking out from among the trees in Northgate Park.