With over 100 jam-packed rooms to explore plus elaborate tea services and events, the Mansion on O Street is a hidden treasure.

The 80-foot tire that looms over Michigan's I-94 was once a Ferris wheel in the New York World Fair.

The concrete shell of an industry giant remains as a playground for graffiti artists, auto scrappers, and paintball warriors.

One man's attempt to create an artistic wonder on a run-down block in Detroit.

This railway-turned-greenway provides a pedestrian link in downtown Detroit and celebrates urban artwork.

Detroit’s Eastern Market has been transformed into an outdoor museum with colorful murals that address social issues and symbolize the city.

The plants form a living library and laboratory for researchers and students at Michigan State University.

This mechanical wonder towers above a river in Michigan's capital city.

Perched atop a brick smokestack, this enormous lug nut symbolizes the local minor league baseball team.

This shallow cave got its name from copious amount of human bones found inside.

Island where motor vehicles are banned -- home to the only carless highway in the United States.

The best Tiki bar in Las Vegas.

Flashy signs from Las Vegas’s past find their final resting place at this unusual graveyard.

A piece of the iconic wall found an unlikely new home in a Vegas bathroom.

Las Vegas's very own 40-foot-tall fire-spewing praying mantis.

An iconic 1960s theater with a Buckminster Fuller-style geodesic dome.

The arch that celebrated the completion of the Lincoln and Victory highways.

This beloved roadside attraction welcomes visitors with his signature neon smile.

This 18-foot-tall steel lotus is a meditation on ecological crisis that originally appeared at Burning Man.

Bill Murray bowled three straight strikes here at Reno's "Taj Mahal of Tenpins."

The randomness of this wall of lava lamps helps encrypt up to 10 percent of the internet.

One of the most scenic stretches of road in America winds between some of the country's oldest trees.

People come from across the globe to swim in this lake believed to have healing properties.

Site of the greatest known waterfall that ever existed.