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

As can be expected from a centuries-old church built in a canal city, the undercroft of this house of worship is beautifully flooded.

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.

More than 450 years ago, an Italian nun became the first woman to paint the iconic subject.

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

Secret refuge and museum of the Duke of Florence.

This bronze boar's snout has been rubbed to a golden sheen by visitors seeking good fortune.

A square-domed symbol of resilience in the heart of the old Jewish Ghetto.

A freedman baker’s lavish tomb has a relief showing various stages of Roman bread making.

Since 1999, this gelateria founded by a string instrument maker has been turning out some of Rome’s best scoops.

The ruins of the largest gladiatorial school in Rome are largely hidden under modern streets.

Ancient ruins hidden underneath a modern luxury hotel.

This curious, round temple is the oldest still-standing marble building in Rome.

One of several skulls claiming to belong to the beheaded St. John the Baptist is on display at this Roman church.

2300-year-old Roman road connecting the empire.

The yawning maw of this pagan visage is said to bite off the hands of liars.

From atop a hill at the center of Cape Town, a cannon has been signalling the time since 1806.

The Cape of Good Hope is not quite as low as you can go on the African continent, but it's still geographically significant.

Haven for Cape Fur Seals, until the Ring of Death of jumping Great White Sharks arrives.

This road winds through the steep coastal cliffside offering spectacular views for those who brave the drive.

Egyptian Revival movie palace abandoned for decades and restored in 2013.

The water-powered carriages are long gone, but for over a century this funicular railway has been the fastest route to the highest point in Paris.

A melancholy jester sits on the grave of a famous 20th-century ballet dancer and choreographer.

An "inside out" building in the historical center of Paris, featuring Europe’s largest modern art museum.