At this Minnesota state park you can easily wade across the source of the mighty Mississippi.

The Midwest's reigning king of surplus stores is full of nothing you need and everything you want.

The national park was once a plantation estate.

The mysterious wonder of an underground waterfall is illuminated by multicolored lights.

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

A bypass decorated with large wooden troll carvings.

An otherwise quiet campground becomes a bustling medieval town for two weeks every year.

Less a museum than a bizarre fantasy world created by artists and engineers.

Fresh wooden posts have been added to ancient holes to recreate a primitive henge clock.

In the loving memory of a tragically deceased role-player this Illinois park is decked out with both dungeons and dragons.

You have to love a museum with a truly dedicated focus. A focus on Superman, for example.

Look closely and you’ll notice that the color changes a third of the way up the tower.

This monolithic statue was erected in honor of Chief Black Hawk (even if it wasn't made to look like him).

Software company Epic Systems has created one of the strangest and largest workplaces of all time.

"World's largest scrap metal sculpture" stands in an outdoor sculpture garden in the middle of Wisconsin.

This cave holds a surprisingly colorful variety of geological oddities.

Once one of the world's great cities, Cahokia was a place of religious worship, trade and mass human sacrifice before being mysteriously abandoned.

Despite repeated attempts to make it work, this former mining town is now nothing but dust and memories.

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

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

Every president in history is immortalized in bronze in downtown Rapid City.

The city of Rockford, Illinois is symbolically protected by a quartet of fittingly stony sentinels.

A bizarre house filled with an astounding array of collections.

Former hotel turned into haunted playground.