This cave holds a surprisingly colorful variety of geological oddities.

A bizarre house filled with an astounding array of collections.

Three playfully immersive mini golf courses let you travel alongside your ball to the cup at this facility, which has been around since the 1950s.

A six-story-tall golden pyramid, surrounded by a moat.

This sprawling mini-golf empire is an impressive testament to a disappearing attraction.

Take a break from all the boring business of death at this funeral home mini-golf course.

The face of a woman pushes its way through the earth.

People escaping slavery passed through the oldest house in Lombard, Illinois on their northbound journey to freedom.

This botanical garden outside Chicago boasts an array of more than 300 varieties of lilacs.

A plaque marks a former safe house on the secret route, now hidden next to a McDonald's.

Pumpkin-like gargoyles and grotesques peer down from the rooftop of this unassuming apartment building in Illinois.

The famous author's birthplace is preserved in a town that he once described as narrow-minded.

It was originally part of a "terrible lizards" collection at the 1964 New York World’s Fair.

A tribute to one granddaughter's old apartment which now represents the whims of each visitor.

The final resting place of the world's first nuclear reactor.

What was once the second largest steel mill in the US is now a sprawling complex of modern ruins.