America's largest viking stands in a Minnesota city that believes it was visited by the ancient nords.

The high point on the 16th president's eponymous roadway is marked by a massive version of his head.

A coal fire has been burning underground here since 1896.

Ute tour guides have been sharing the ancient dwellings and rock art inside this large park with visitors for more than 40 years.

16,500-acre ranch filled with American heritage, geological wonders, and a giant pile of tires is the crown jewel of an intriguing tug-of-war.

A roadside collection of over-sized iron creations that are a bit more macabre than most.

These cliff and rock formations are made out of Sioux Quartzite.

A winged-helmed, sword-brandishing tribute to German Americans.

A museum chronicling pioneer life constructed over Interstate 80.

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

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

Huge abstract sculptures of the Puerto Rican Flag.

The 606 is a decade in the making.

A little-known subterranean street runs under some of the best-known buildings in Chicago's River North.

Illegal drag racing two stories beneath Chicago’s streets.

The iconic Chicago sculpture hides a beautiful and easily overlooked plaque on the backside.

A spectacular remnant of an Adler and Sullivan masterpiece that was destroyed in 1972.

If all members were present at the table, a sixth of the world's wealth would be under the same roof.

A modest walled graveyard where nobody is actually buried.

Georgia's first brewery is also one of its oldest surviving buildings.

Constant erosion has created a surreal landscape of bleached and preserved fallen trees.

The remnants of the fortress that saved Georgia from the Spanish still stand guard on their swampy island.

Bronze footprints mark the path where a civil rights leader tried to march in peaceful protest before being knocked unconscious.

These ruins are all that remain of what a Spanish barrack that likely housed a quarry overseer, masons, and stone cutters involved in the construction of the Castillo de San Marco.