The world's largest version of this iconic puzzle cube is located in Knoxville, Tennessee.

This tower was once used to create ammunition for early settlers.

Thousands of tiny squares in different colors make up this piece of street art.

A wedding chapel, vintage clothing shop, and bar all under one roof.

This stunning home looks like it belongs in medieval Europe, not North Carolina.

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

Andy Griffith's hometown has made itself up to look like the fictional town of Mayberry.

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

The oldest bridge in South Carolina may have been designed by the same man who created the Washington Monument.

This recently rediscovered Civil War-era submarine was the first to ever sink an enemy ship.