This fountain has a growing (animal) population, and might also be growing in size.

This 86,000-square-foot artwork is the largest mural in the world to cover a dam.

Over a millennium ago, this site on the shores of Lake Titicaca was home to a city of more than 10,000 people.

The original attack periscope from a 1940s navy submarine towers high at this memorial site.

The longest timber-piled jetty in the world has an underwater observatory.

A colorful sculpture of an Australian symbol patrols an otherwise ordinary traffic island.

An art project designed to encourage people to explore and investigate their surroundings more closely

In a city of wooden houses, this watchtower was vital for early fire detection.

A secret hatch containing two parchments was discovered in this statue over 40 years after its installation.

An ancient Roman temple first dedicated to an emperor's wife is now a church.

This ancient market is often referred to as the oldest shopping mall in the world.

The remains of this 2nd-century Roman temple are incorporated into a modern building.

This equestrian statue of Constantine the Great has been the subject of criticism for centuries.

Breathtaking and huge 430 year old maps of Italy.

This is the oldest Roman-made bridge in the city still existing in its original state.

Historic fortifications form the boundary of Vatican City, but it’s not entirely surrounded by walls.

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

Romans decided this 16th-century "talking statue" was so ugly, they named it after a primate.

A monumental fountain in Rome features a large statue of Moses that has been criticized for centuries.

Ancient ruins hidden underneath a modern luxury hotel.

An ancient Egyptian obelisk is now used to commemorate fallen Italian soldiers.

A sculpture serving as an homage to Pope John Paul II.

Rome's first modern graffito is all that is left of a peaceful protest from the 1970s.

This ritzy Italian market is built around a statue of an unforgiven heretic who was burned for his belief in an endless universe.