In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

This blowhole is supposedly caused by a trapped monster.

This museum of Hawaiian and Polynesian culture is the legacy of the last descendant of the Kamehameha Dynasty.

A controversial memorial at the place where Captain Cook met his violent end.

A massive Montreal stadium that has seen nothing but trouble since its inception.

Eccentric concrete mansion and museum designed and built by hand from the inside out.

Ant sculptures march up the side of what used to be an iconic spot in punk rock lore.

These tourist trap caverns are said to be the former home of a legendary Pennsylvania Hermit.

Dedicated to the art and science of glass in equal measure, this space is as much laboratory as museum.

Twin Peaks' real life Double R Diner has been restored to its damn fine television look.

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

The world's longest known cave system.

I-95's Tijuana-style celebration of kitsch at the Carolina border.

Step inside Lucy, the world's largest "elephant."

A giant Troll lurks under one of Seattle's oldest bridges.

Iconic rock formations that allow for exploration during high or low tide.

This monster fiberglass crustacean stands watch over the self-proclaimed "lobster capital of the world."

Go inside the house that inspired L. M. Montgomery to create one of literature's most beloved heroines.

The world's largest mountain carving could fit all of Mount Rushmore inside it many times over.

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

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

World's largest Christmas store.

Island where motor vehicles are banned -- home to the only carless highway in the United States.

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