This former charity hospital for elderly clergy houses some of Seville’s most treasured paintings.

An 18th century fountain and two columns are all that remains of Rome's forgotten river harbor.

A detailed pachyderm supports Rome's smallest Egyptian obelisk.

Jesus' footprints and the first catacombs in the world.

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.

The only visible reminders of an elaborate engineering project that kept the tower from reaching the tipping point.

The graveyard is filled with beautiful funerary art and boasts breathtaking views of Florence.

A slightly creepy gallery of plaster cast models in the same museum as Michelangelo's David.

The mummified relic of St. Antoninus.

Stare out over the lagoon and beyond from this 10th-century campanile on the island where the city of Venice began.

This deconsecrated church has seen many uses, from a tobacco storehouse to a cinema.

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

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

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

Breathtaking and huge 430 year old maps of Italy.

Hidden beneath the famous St. Peter's Basilica is a veritable city of the dead that may hold the remains of St. Peter himself.

Hidden beneath a beautiful overlook you’ll find the history of the city depicted in comic strip format next to a pay toilet.

Portugal's National Pantheon has a history of curses, collapses and financial problems.

Legacy of the earthquake that nearly wiped Lisbon off the face of the Earth.

A propulsion engine testbed that paved the way for the Space Shuttle launch sits without recognition at this rocket center.

It may look like no more than a full-scale model, but every part of this full Space Shuttle stack had a working role in aviation history.

What better place to take a seat?

A collection of huge Pre-Colombian structures in Alabama.