An ever-evolving wall of graffiti art off East Liberty Street.

A riverside park built around the ruins of a massive dam that collapsed in 1909.

Duluth mineral magnates built this charming art deco lodge to be their private clubhouse.

When waves crash onto this section of beach, the rocks sing a song.

This bright yellow building is packed with sweet treats from all around the world, from chocolate-covered crickets to whoopie pies.

When flour explodes, it's not a pretty sight.

The literary king of the Jazz Age was born in this lovely Minnesota home which still honors his legacy.

At this Minnesota state park you can easily wade across the source of the mighty Mississippi.

Equal parts record-breaking temple to consumerism and bizarre fun park, it's more than you think it is...

A toweringly silly piece of modern art has been delighting locals since the 1980s.

Find out what it sounds like when doves cry at Prince's recording studio estate turned museum.

Twin Peaks' real life Double R Diner has been restored to its damn fine television look.

"Dark Sky Park" is heaven on Earth for astronomers, one of the rare U.S. locations with no artificial light pollution.

When ecosystems collide in the arid Southwest.

Half of a waterfall goes into the river while the other half seems to disappear.

The highest bridge in America was built for an almost unnervingly small amount of money.

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

Shop of curiosities with a dinosaur museum tucked in its basement.

A phenomenal assembly of pueblos in New Mexico is the most complete example of ancient ruins north of the border.

Hidden beneath a bridge, this waterfall is known for the large amounts of graffiti painted on its base.

Hundreds of glow-in-the-dark objects light up a museum in a historic zinc mine.

Once a mortuary that held the remains of Buffalo Bill, this Denver hotspot is now a death-fixated restaurant.

Legends surround this jagged rock formation in the New Mexico desert.

Sandstone rock formations that look like they belong on the cover of a progressive rock album.