This tiny site in Iowa, part of a patchwork national wildlife refuge, is home to ancient flora and fauna.

Chilly air billows out from the entrance of an abandoned mine on a steep hillside, providing a refuge for Ice Age fauna and flora.

One believer transformed a local curiosity into proof of Vikings on the Great Plains.

The remains of a bustling turn-of-the-century park built to showcase the wonders of electricity.

This 16-foot-diameter wooden coin has been standing in Iowa City since 2006.

An early Portuguese serial killer's head is alarmingly well preserved in a jar at the University of Lisbon.

A mysteriously dark cemetery monument fuels stories and legends galore.

A single artist is behind these large-scale models made of hundreds of thousands of two-inch wooden matchsticks.

The world's only three-story rotary jail is now a museum to a bizarre trend in prison design.

Amateur taxidermy museum known for its large collection of white squirrels.

The Iowa state contender for largest pan in the world oddly only comes in second or so.

Admire the art and then buy a raccoon skull cleaned by flesh-eating beetles.

The center of the only hemisphere that awards visitors with a commemorative coin.

World's largest carved onyx figure stands as a tribute to enduring peace.

An unusual assortment of art, furniture, and other curiosities.

Triangular House built on a leafy residential street in St. Paul.

These curious caverns have been home to mushrooms, gangsters, and disco.

Equal parts record-breaking temple to consumerism and bizarre fun park, it's more than you think it is...

Five acres of divinely inspired folk art.

Home to the world's largest refracting telescope and the birthplace of modern astrophysics.

This simple home was the beginning of a long journey for the iconic Western film star.

Eternal resting place of the grave robber and murderer who served as inspiration for many of cinema’s famous madmen.

The titular fictional logger only inhabits this otherwise historically focussed museum via a piece of fiberglass kitsch.

A four story, football field-sized, nine-grotto creation made of shells, minerals, and rare stones.