South Carolina's last remaining slavery auction house is now a museum devoted to its own tragic history.

Once the most flame resistant building in the country, the South Carolina Historical Society building was almost burnt down in a fire.

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

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

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

Fresh wooden posts have been added to ancient holes to recreate a primitive henge clock.

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.

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

The Old Courthouse takes visitors on a captivating trip through St. Louis' timeline.

Less a museum than a bizarre fantasy world created by artists and engineers.

An underground mansion with fruit-bearing trees and grapes growing beneath the surface of central California.

A stellar example of Art & Crafts architecture, and a movie set to boot.

One of Hollywood’s favorite government buildings.

An architectural statement of artistic intent smack in the middle of Providence, Rhode Island's Colonial uniformity.

Oldest synagogue in the United States.

This well-preserved Cistercian Abbey in a romantic pastoral setting has inspired artists like the poet Wordsworth.

A six-ton wedding present for the King of the Scots.

The most loyal of little dogs, or a Victorian era publicity stunt?

A gallery specifically dedicated to the botanical illustrations of a remarkable traveling lady.

Thanks to modern navigational tools we now know that the true prime meridian runs through a park next door.

The popularity of Sherlock Holmes led to the creation of his fictional address, turning the orderly London street numbers askew.

London's last remaining public soapbox site has seen speeches from Karl Marx, Vladmir Lenin, and George Orwell.

Rebuilt remains of a temple to Roman god Mithras.