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

A sinister pyramid in the Frari contains the heart of the famous neoclassical sculptor.

This community on a small Venetian island has taken to painting their houses in bright neon hues.

The roof of this ancient mausoleum is made from a single Istrian stone weighing a massive 230 tons.

This 6th-century church has the largest and best-preserved collection of Byzantine mosaics outside Constantinople.

Italian poet Dante Alighieri is entombed in this small mausoleum in Ravenna, and his hometown of Florence has never been too happy about it.

Filled with goldfish swimming in a shallow pool of sea water, this ancient crypt is more wishing well than burial site.

Legend has it this fountain built to symbolize the Pope’s power hides a strange secret concerning Neptune's manliness.

A small window on Via Piella offers a lovely and rare peek at Bologna's lost canals.

This dilapidated ship carcass covered in trees is a striking sight.

This fairytale castle was built as a show of power but was nearly torn down thanks to its history of torture.

King Ludwig I's collection of beautiful women.

Among the ostentatious rococo ornamentation of this church, an image of death cuts the life-thread.

This ancient Roman bridge and aqueduct still stands as a wonder of classical construction.

This ancient theater was once the home of fierce gladiatorial battles.

The last four extravagant street signs of London's historic banking street.

The taxidermied remains of a once-great parrot.

The watery entrance for condemned prisoners heading to the Tower of London is still visible along the Thames.

Charles Babbage's proto-computer, painstakingly brought to life.

The Metropolitan Police refurbished the blue box (perhaps not coincidentally) the same year "Doctor Who" returned to TV screens.

After nearly 60 years, there's still a bear at Paddington Station looking for help.

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

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

A clock designed to run with perfect accuracy for 10,000 years.