This historic mansion was built as a symbol of love between a husband and wife.

This quarter-mile tunnel under the Bluff in Pittsburgh bends at a 45-degree angle.

With 3,000 bikes on display, the world's largest bicycle museum includes some famous rarities.

This eccentric mansion museum holds a impressive collection of rare and automatic instruments.

Despite violent work crews and massive delays this abandoned canal tunnel was built to last into the modern day.

A secret door leads to this cozy dive that sells only “milk.”

Glasgow’s piece of the patron saint of love.

This stately monument has been wearing a traffic cone hat for decades much to the delight of the locals.

The Boston square dedicated to the dark poet who was born nearby.

This park contains a number of standing stones meant to heal and inspire.

This natural wonderland is a unique chance to explore a Carolina bay, a mysterious geological formation of unknown origin.

One man's extraordinary topiary garden in a small South Carolina town.

An underground magnet for ever-changing street art.

Just a few miles from downtown Atlanta is a trail covered in a crazy collection of outsider art.

The highest point in North Carolina and the United States east of the Mississippi River, Mount Mitchell is named after argumentative explorer Elisha Mitchell.

Garden dedicated to native carnivorous plants and site of huge flytrap heist.

A curious collection of oddities including a lock of Alexander Hamilton's hair and Harry Houdini's ouija board.

The highest point in Tennessee, Clingmans Dome bears witness to the ravages of one type of insect.

Knoxville’s architectural icon was the symbol of the 1982 World’s Fair, even catching the googly eye of Bart Simpson.

Enormous lake at the bottom of a unique cave system.