Hidden away in the city of Madison, Wisconsin is a nearly forgotten home that Frank Lloyd Wright built for a childhood friend.

Museum with an extensive collection of Cray supercomputers and related artifacts.

This picturesque cliffside beacon no longer calls to sailors but shines once a year in honor of a famous shipwreck.

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

A hundred-year-old museum filled with giant physics toys and experiments designed by grad students.

The arboretum whose marshy soil sucked up the dreams of housing developers.

Software company Epic Systems has created one of the strangest and largest workplaces of all time.

A remnant of the last Ice Age, this lake is surrounded by fascinating rock formations.

Over thousands of years, this slot canyon was carved out of the bed of an ancient lake.

A spooky defunct railroad tunnel now part of a sprawling trail.

A collection of pianos and more guaranteed to delight anyone interested in music history.

These curious caverns have been home to mushrooms, gangsters, and disco.

Home to the Amorphophallus titanum "Corpse Flower," which is among the largest flowers in the world and also smells powerfully of rotting flesh when in bloom.

Hub of Scandinavian culture in a Minneapolis deli.

20,000 pieces in a Frank Gehry-designed building.

A whimsical sensor instrument for Minneapolitans to play on their walks to work.

A giant pair of thick black glasses mark the tragic demise of a trio of rock and roll legends.

This hand-carved wooden carousel in the Story City North Park was built in 1913.

The magazine keeps a perfectly groomed display garden for its photo shoots.

The headquarters of the prestigious World Food Prize celebrates the heroes in the fight against hunger, has no cafeteria.

A fantastic array of trays and cables once whisked books over to the Capitol at 600 feet per minute.

There's a piece of New York City transportation history hidden in plain sight at a Manhattan subway stop.

More gold than anywhere else, ever.

Urban explorers embraced America's now demolished first suburban mall, south of Chicago.