This head-spinningly bizarre Depression-era art cave is wall-to-wall quartz and Jesus.

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

This otherworldly church spire reaches up toward the heavens.

The "World's Largest Underground Business Complex," a 55,000,000-square-foot city underneath Missouri.

This historic Illinois "Muffler Man" has been converted from axe-touting lumberjack to rocket-wielding space ace.

A lush green oasis in the middle of Chicago.

A bloodstain from "the wound of the transverberation of the heart."

One of the largest pieces of scientific equipment ever carried on a NASA space shuttle sits in a Chicago alley.

This NASA test station is home to some of the world’s largest and most powerful space environment simulation facilities.

A collection of Witchcraft artifacts and occult paraphernalia started by the leader of the Long Island Coven.

Sail through this subterranean show cave that is home to a legend that would go on to name nearly everything around it.