Visitors to this library are in for a real-world education in modernist architecture.

Not your typical pet cemetery.

This ancient cave is home to a museum, bar, and is filled with fluorescent minerals.

Strange physical sensations and optical contradictions keep visitors coming back for more.

This feline raises a friendly paw at drivers barreling toward the freeway.

Berry Gordy Jr.'s old home was the original headquarters of Motown Record Corporation.

One of Detroit's most iconic fictional protectors, RoboCop, finally has a statue.

Controversial tribute to the heavyweight champion boxer who grew up in Detroit.

To truly appreciate Detroit's landmark skyscraper, you have to step inside.

This sprawling bookstore spans four floors and has more than a million books in stock.

One of the largest crucifixes in the world stands 55 feet tall in a secluded, wooded area of northern Michigan.

A stately palace has been converted into the world's largest cannabis museum.

An office built to look like a giant basket.

Found art has transformed this Pittsburgh neighborhood into a psychedelic dream.

A sculpture made of 10 Cadillacs as a monument to the “Golden Age” of the American automobile.

Whether or not you take the 72-ounce steak challenge, there’s plenty of history, fun and Texas-style food at this legendary stop along Route 66.

An enormous pink granite batholith, long attributed with spiritual powers by the Tonkawa Indians.

An immense cave that has served as an outlaw's treasure trove, an underground dance hall, a nuclear fallout shelter, and much more.

An emerald-green grotto just a short trip from Austin.

One part antique store, one part curiosities hodge-podge.

Home to an endangered salamander, a full moon celebration, and a large spring-fed outdoor swimming pool.

This simple frog painting created by musician Daniel Johnston embodies the spirit of Austin.

Roadside Americana, fairy tale characters, and Austin quirkiness come together at this magical course in the heart of Texas' capital city.

A tribute to a great Texas blues musician.