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

A castle built by an eccentric medieval enthusiast in rural Ohio.

A bizarre roadside attraction and the first instance of miniature golf in the world.

The mysterious wonder of an underground waterfall is illuminated by multicolored lights.

This huge clock made of flowers and simple machinery was once used a political weapon.

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

Visitors to this arboretum are greeted by three smiling giants crafted from sustainable materials.

All you ever needed or wanted to know about America's favorite whiskey, but not a drop to drink.

Eight rare Corvettes are swallowed up by a sinkhole in Kentucky's National Corvette Museum.

Even with its slightly risible name this colossal cross is still able to inspire awe.

In the loving memory of a tragically deceased role-player this Illinois park is decked out with both dungeons and dragons.

You have to love a museum with a truly dedicated focus. A focus on Superman, for example.

A collection of outdoor art by renowned muralist Robert Dafford depicts the history of a flooded city.