An ambitious developer built what was once the world's tallest fountain in a Phoenix suburb.

This 40-room dwelling tucked within a cliff was built by the basin's prehistoric residents.

This is one really big nut.

High in the Sacramento Mountains, a facility dedicated to studying the sun.

What was once a summer home next to a waterfall has now become littered with graffiti and children in swimsuits.

This former Texas landfill is flush with 300 million-year-old fossils, all fit for the taking.

An old dining hall now serves up ghost stories for lusty locals.

Turnip-shaped island just off the Michigan shore in Lake Huron.

Artist Scott Hocking took a dilapidated 1890s barn to create his massive "Barnboat."

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 fifth-longest suspension bridge the world, connecting one Michigan peninsula to another.

Hidden beneath the waters of Lake Michigan rests a perfectly intact ship from the early 1900s.

Swing by this brightly painted former cannery on the water for a crash-course in local boating history.

This national park on the shore of Lake Michigan features remarkable dunes that lie at the heart of a Chippewa legend.

Wisconsin's most celebrated export gets the royal treatment on I-94.

The longest of the four remaining covered bridges in Missouri.

A museum chronicling pioneer life constructed over Interstate 80.

A small town built on an abandoned airfield has former runways as streets and a bar and grill in an old airplane hangar.

Devilish landscape, once cinema home to giant alien bugs, now derelict roadside attraction.

The world's largest mineral hot springs is home to a herd of bison, a free public bath house, beautiful mineral formations, and a terrifying swinging bridge.

This archaeological dig site and museum is home to one of the largest dinosaur fossil collections in the world.

The granddaddy of all tourist traps, built on ice water, jackalopes, and a giant dinosaur.

A former railroad trestle over Interstate 90 has been refurbished for non-motorized traffic on the Palouse to Cascades trail.