Denmark’s never-ending bridge.

Preserved "bog person" that is over 2,000 years old.

This colorful artistic feature atop a Danish art gallery allows visitors to stroll through a rainbow.

Mounds, rune stones, and a 1,000-year-old church, left behind by Denmark's first two kings.

When this Iron Age bog body was discovered in 1835, it was thought that she had died recently.

This atmospheric spot in Pärnu's historic old town is located in a 17th-century almshouse.

This small city park is best known for the nightly convergence of thousands of shrieking parakeets.

Beneath the impressive baroque cathedral that rises from the center of Berlin lies the largest collection of Prussian royals in the world.

One of downtown Berlin's last reminders of its Communist past.

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

Architectural monsters are devouring this palace's every door and window.

This Italian stadium makes liberal use of fascist statuary to evoke classical sporting arenas.

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

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

A modern sliver of architecture in Roma.

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

Ancient ruins hidden underneath a modern luxury hotel.

The martyr's wax-enhanced skeletal remains lie preserved in a glass case in the Santa Maria della Vittoria in Rome.

Installed in an act of one-upsmanship, the annual sundial in this church is also a symbolic victory for the Gregorian calendar.

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

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

An alchemist's "magic door" stands in the middle of a Roman park.

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

Believed to be the remains of the lost Temple of Minerva, this nymphaeum has been known by its misnomer to this day.