These chunky stone towers out in Lake Michigan are the key to Chicago’s drinking water.

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

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

The Midwest's reigning king of surplus stores is full of nothing you need and everything you want.

A bizarre house filled with an astounding array of collections.

These experimental weapons brought World War II to Nebraska as well as 26 other U.S. states.

A World War II-era submarine is stuck in the mud in New Jersey.

The little-known, 300-year history of the area includes former lives as a bustling tobacco port, parking lot, and industrial dump.

Beautiful stained glass depictions of the history of human flight fill this surprising chapel.

This historic train station has been converted to a locomotive themed hotel.

A pair of slides and a tree-lined stair corridor have been an urban oasis for nearly 40 years.

America's oldest Eastern European synagogue provided the immigrants of crowded Lower East Side tenements a space of sanctuary.

This abandoned Navy base was transformed into an off-grid alternative living community for thousands of people.

Elevated freight railway turned wildly successful urban park.

This churchyard arbor is surrounded by hundreds of gravestones placed there by author Thomas Hardy.

The oldest hall in Iceland was written of in the Sagas and features a centuries-old escape tunnel.

The site of one of history's most indelible and horrific tragedies.

A hand-built folk art installation covered with messages of God's love.

This 17th-century street hidden beneath Edinburgh was once a breeding ground for the black death.

Half-sized replica of the Leaning Tower of Pisa built to honor Galileo.

Protecting the future of some of the rarest and most misunderstood mammals of North America.

The most confusing clock in New York.

Staves, storm-calling, and of course, necropants.

This wrecked airplane has been sitting on a black sand beach since the 1970s.