A Lovecraftian altar of nightmarish bronze chairs sits ominously on a boardwalk in Puerto Vallarta.

Five acres of divinely inspired folk art.

The first spinning jail built in the United States is the only one that still turns.

Even with only two residents and one building, this tiny Illinois town is famous for its burgers.

Part of a worldwide art project, this mysterious semicircle of concrete shapes holds the pieces of a larger story.

The longest navigable underground river in the United States is home to countless blind and albino animals.

The rusted remains of an ill-fated freighter lie just off the coast of South Manitou Island in Lake Michigan.

The pieces in this sculpture garden are made from demolished buildings that were once landmarks of Motor City.

The world’s largest Masonic temple was saved by the White Stripes.

Detroit housing collective working to create an "environment for revolutionary change."

These enduring murals depicting a distinctly Marxist tribute to capitalism could not even be defeated by McCarthyism.

This former industrial site has transformed into a community sculpture garden that hosts monthly Full Moon parties.

Enormous small-business mecca in the Midwest, serving dozens of artists.

The only surviving prototype for Buckminster Fuller's house of the future.

Astounding collection of coin-operated games and automata.

This museum remembers an apocalyptic cult that became more famous for baseball than religious radicalism.

The site of a 19th century "dream city" that almost rivaled Chicago before being swallowed by the Indiana sand dunes.

The highest point in Wisconsin is capped by two towers that are not as mythic as Tolkien's but provide much better views.

An oddly poignant roadside attraction celebrating American folklore.

This cave holds a surprisingly colorful variety of geological oddities.

A bypass decorated with large wooden troll carvings.

One Austrian's singular yard is now preserved as a folk art garden of concrete wonders.

The world's third-largest scale model of the planets.

Lions and tigers and leopards, servals, pumas, bobcats, lynxes, and ocelots... oh my!