Two stone columns flank the grand Venice square, but there were supposed to be three.

An extensive collection of reliquaries containing the bones of saints housed in the largest Catholic church in Venice.

This palatial spiral staircase was so unusual the name "snail" was given to the noble family who built it.

Go inside to really appreciate this 500-year-old technological masterpiece.

A copy of the famous statue can be found in this Florence piazza, along with one of the most breathtaking views of the city below.

A Nesting Doll of Churches.

The final resting place of the poets Shelley and Keats.

2300-year-old Roman road connecting the empire.

A master of trompe-l'oeil creates a stunning, tourist-fooling dome out of a flat ceiling.

Alabama has a fiberglass Stonehenge. With apologies to Spinal Tap, this one is full-size.

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

At 135 years old and counting, this historic print shop is heaven for poster nerds and music buffs.

One Confederate statue that accurately reflects the ugliness of its subject.

Civil War soldiers, captains of industry, and paupers all interred on historic grounds.

Beside some power panels, a plaque celebrates the history of an alternate world.

This funicular railway rumbles along for a mile up the nearly vertical face of Chattanooga’s Lookout Mountain.

Auburn's iconic eagle flight goes back to a 19th century eagle that dropped dead on the field after inspiring the football team to victory.

Inside this small brick bungalow is a collection of toys intended for the afterlife.

The former home of the hard partying literary power couple is now one of the only museums devoted to their story.

Designed by Maya Lin, the memorial honors 41 individuals who died fighting for equal rights between 1954 and 1968.

The country music legend's grave is surrounded by Astroturf because fans kept plucking out the grass.

The whimsical construction on the roof has given rise to many a Montgomery myth about its contents.

Cadillac where country's first big star was found dead.

The remains of an idyllic small town built for the film 'Big Fish' still stand around a rundown main street.