Home to the largest urban bat colony in North America, estimated at 1.5 million bats.

This unique structure in suburban Austin is made up entirely of other people's castaways, and constantly changing.

Continuing the tradition of the dime museum in style.

The vast, legendary catacombs hold secrets much stranger than stacked bones.

Paris' fabled purveyor of exotic taxidermy and natural history curios.

Statue of death tucked in the University of Medicine courtyard.

Weird wax anatomical models reside here, as do other anatomical specimens.

One of the Seven Wonders of the Modern World holds the world's tallest metal staircase.

This morbid, delightful curiosity shop offers everything from animal bones to human teeth.

What's left of the ruins of the 1893 Columbian Exhibition, or World's Fair, also known as the White City.

The twin towers in this Chicago fountain use 50 foot tall video screens to spit on people.

A monument to the art of slicing people open.

Four glass boxes hover over 1,000 feet in the air to give visitors an unparalleled view of Chicago.

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

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

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

When ecosystems collide in the arid Southwest.

One woman's UFO-themed campground, complete with self-built energy vortexes, UFO-themed weddings, and magic bushes.

The Denver airport is guarded by a 32-foot-tall sculpture of a demonic horse.

The final resting place of American icon Buffalo Bill, and a museum that aids in telling his tale.

The only remaining collection of flayed figures made by French "madman" Honoré Fragonard.

A Natural History and Science Emporium.

The first declared National Monument in the United States.

Self-built house and sculpture park where the creator can still be seen in a glass coffin.