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

Home to items never before seen by the public.

The unluckiest U-boat in the entire German fleet is now on display in a Chicago museum.

Abandoned bridge hidden deep in the San Gabriel Mountains.

A roaring, awe-inspiring double cascade of icy water flows through woodland Oregon like something out of a Tolkien novel.

A spiritual vortex among the red rocks in Sedona.

Ninety feet off the valley floor is an ancient dwelling put under protection of the U.S. government by Teddy Roosevelt.

A B-17 bomber stands as a memorial to the residents of Tulare County who served in World War II.

The haunted reputation of these abandoned Colorado train tunnels is probably not helped by the terrifying spiked fence.

Strange red rock formations that have been attributed to a higher power for hundreds of years.

Knoxville’s architectural icon was the symbol of the 1982 World’s Fair, even catching the googly eye of Bart Simpson.

A bronze statue on a downtown corner honors Minneapolis's favorite career gal.

The only arched bridge made of stone on the entire Mississippi River.

A beautiful 62-acre Catholic shrine and botanical garden.

This immigrant bridge once spanned the Thames but is now a fixture of an Arizona city.

Giant pinnacles in the sun-scorched lands of Southern Utah have been nicknamed "white ghosts."

Standing in a state of "arrested decay," this ghost town allows for a detailed peek into Gold Rush life in an unusually harsh climate.

The marker offers a rare chance to be in four U.S. states at once, though there's some controversy over its geographic accuracy.

A hotel and restaurant serving as the mecca of kitsch.

A bizarre roadside attraction and the first instance of miniature golf in the world.

A Swedenborgian glass church surrounded by redwoods sits perched atop a massive landslide area.

The "world's biggest dinosaur" once housed a creationist museum in its abdomen.

A historic freight system that found the true gold rush is in tourism.

The unbelievably opulent home built for an infamous newspaperman.