An urban forest overtakes what was the greatest failure of utopic urban housing.

Over a dozen Native American earth mounds dating back over 2,000 years dot this Tennessee archaeological park.

This is not your typical jungle gym.

A notorious Route 66 eatery once frequented by Al Capone.

A chessmaster's dream destination.

The world's longest known cave system.

This replica of the Greek structure is in the heart of Nashville.

What was once a presidential estate is now an exotic menagerie and home to the Budweiser Clydesdales.

On the side of Arkansas' Great River Road stand the remains of a forgotten World War II POW Camp.

Spanking machines, fake goats, and more devices of humiliation are on display in this museum of fraternal initiation devices.

A kitschy, creepy St. Louis mainstay.

Once one of the world's great cities, Cahokia was a place of religious worship, trade and mass human sacrifice before being mysteriously abandoned.

A historic house in St. Louis was plagued by a series of suicides committed by family members involved in a successful brewery.

Quirky water tower advertises the long-gone Brooks Tomato Products Co.

Home of an evil witch famous within southern folklore.

A restored, one-room African-American schoolhouse in the diva's hometown now preserves the legacy of its most famous student.

This "little gallery in the middle of nowhere" is housed in a 170-year-old horse barn in the Missouri Ozarks.

The world's largest collection of porcelain "veilleuses-theiere," or night light teapots, includes four that belonged to Napoleon.

In the St. Francois Mountains in the Ozarks at 1,772 feet above sea level, Taum Sauk Mountain is the highest (and possibly oldest) peak in Missouri.

Giant granite rocks standing end-to-end like a train of circus elephants.

A key producer of charcoal iron in the early 1800s, the structure still stands today.

The world's largest man-made underground caverns offer unparalleled underwater wonders.

Patrick Dougherty's fantastic living tree sculptures, mind-blowing but temporary.

This open air cathedral invites all faiths to worship under the only roof big enough to fit them all: the sky.