This small city where almost everyone lives in the same building can only be reached via North America's longest tunnel.

This futuristically sylvan church is a glass-enclosed marvel of modern architecture.

Running under an entire mountain, the longest highway tunnel in North America is kept fresh using portal fans and jet fans.

European castle ruins in an American state park are actually the product of death and grief.

While not recognized by Guinness, this chocolate waterfall is likely to be the world's largest.

Erosion and time have created a naturally-formed water park.

This haunted hotel built on natural springs once served as a hospital for a quack doctor promising a cure for cancer.

Giant granite rocks standing end-to-end like a train of circus elephants.