Europe's simulation of the Martian surface uses soil from Mount Vesuvius.

Buddha shrines hide within dark tunnels at this unique forest temple.

Peek into the world of those creating the beautiful, delicate paper parasols found all over the globe.

Copenhagen's celebrated theme park and gardens.

Try not to get lost in this picturesque Brazilian labyrinth of the dead.

This "Little Finland" started as a Finnish utopian society in Eastern Brazil.

Model Trains and Much More in Hamburg.

Berliners converted a bombed-out, disused lot into a community-run urban farm with its own cafe and bar.

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

This one-of-a-kind Roman arch is not actually dedicated to the god Janus.

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

This gallery commissioned by Cardinal Spada is known for its magnificent optical illusion.

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

This park on the outskirts of Rome boasts two ancient Roman aqueducts and a medieval tower.

A detailed pachyderm supports Rome's smallest Egyptian obelisk.

This subterranean shrine beneath a bike rental store celebrates the iconic Italian scooter.

Inside this McDonald's you can dine on your Big Mac and fries next to a 2,500-year-old Roman wall.

A modern sliver of architecture in Roma.

This Roman arch marks the location of an ancient gate at one of the Seven Hills of Rome.

A Nesting Doll of Churches.

A hospital where antique dolls are given new life.

This former Roman Catholic Church still contains the embalmed hearts and organs of 22 popes.

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

A fairy tale castle in modern Rome.