A lush green oasis in the middle of Chicago.

Four glass boxes hover over 1,000 feet in the air to give visitors an unparalleled view of Chicago.

This massive stained-glass masterpiece is thought to be the largest Tiffany dome in existence.

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

This sprawling building built in 1890 was one of Minnesota’s earliest and largest mental health facilities.

This statue of Olympic hockey coach Herb Brooks immortalizes one of the greatest moments in American sports history.

After the musical legend's death, his memorial was mysteriously graffitied in gold.

During World War II the Thorp building was guarded by the OSS, FBI, and US Navy because of the top-secret bombsight being produced there.

The statue honors the booming birds Rothsay, Minnesota, is famous for.

This kaleidoscopic mural shows Bob Dylan throughout his transition from young troubadour to Nobel laureate.

An amazing collection of sculptures and art.

A bronze statue on a downtown corner honors Minneapolis's favorite career gal.

This posh mansion began as a family's estate and ended as the site of a murder ripped from the pages of a pulp novel.

These crudely shaped folk giants may be the the second most photographed statues in the U.S.

This replica of an 8th century burial ship actually sailed to Norway before returning home to Minnesota.

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

The only arched bridge made of stone on the entire Mississippi River.

Hub of Scandinavian culture in a Minneapolis deli.

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

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.

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

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

The famed architect designed this Minnesota gas station of the future with a lookout tower.

The ruins of Theodore Roosevelt's beloved ranch stand in a forgotten corner of a national park named after him.