Walk the whole Mississippi River!

A fitting attraction for the corn capital of the world.

Wedding chapel's mysterious spiral staircase said to be miraculously constructed.

What is the Thing?

The fairy tale castle of the "fairy-tale king."

Aqueducts have dramatically changed this old lake, now home to tufa towers and its very own species of tiny brine shrimp.

Renaissance hospital featuring a rotating door into which unwanted babies were dropped.

A large grotto built in the 16th century amidst Florence's famous Boboli gardens.

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

This private skyway is filled with art and was expanded explicitly so that Hitler could appreciate a river.