Once the "Eighth Wonder of the World," this iron railroad bridge was decimated by a tornado.

A failed piece of Orientalism has become the proud symbol of a community.

When the Austin Dam failed it destroyed much of Austin...and then it failed again.

A clone-tree in Washington Square Park sprung from seeds that went to the Moon and back.

This might just be the TARDIS of bookstores.

The United States’s oldest funicular railway glides up and down a steep Pittsburgh street.

In which a local geological marvel becomes a quaint roadside attraction.

Dr Barnes' $25 billion private collection of art and arboretum.

One of the steepest streets in the United States makes an intriguing challenge for cyclists.

Sail through this subterranean show cave that is home to a legend that would go on to name nearly everything around it.

Mural made of 100,000 pieces of hand blown glass, and until recently, the largest glass mural in the US.

Philadelphia boasts one of the best — and most often overlooked — traditional Japanese gardens in North America.

A rare view of a preserved Victorian science museum.

A toxic ghost town sitting atop a massive coal fire.

Frank Lloyd Wright's most iconic home dangles over a Pennsylvania waterfall.

Mysterious rocks that ring musically when struck.

This nature center has one of the largest collections of native raptors in the Pacific Northwest.

As a show of peace, a Japanese naval pilot gifted his 400-year-old Samurai sword to the Oregon town he bombed.

The victims of a free-floating Japanese bombing during WWII are remembered by this stone monument.

A Roman-style column in Oregon hides a spiral staircase inside.

The largest wooden building in the world now houses a fascinating collection of aircraft.

While it is not equipped to peer into outer space this observatory looks like it was built on the moon.

Tens of thousands of tiny birds swarm into one school chimney every fall.

A volcanic landmark located on an Ice age lake bed.