This beautiful building in the heart of Manhattan's Financial District was empty for decades.

Look closely and you’ll notice that the color changes a third of the way up the tower.

A little marble compass above George Washington's (empty) tomb in the Capitol marks where D.C.'s four quadrants intersect.

This pair of gilded girls atop an Art Deco building in Copenhagen were built to function as a weather indicator.

Visitors are treated to a stained glass kaleidoscope interior inside this work of art.

The gilded, masterful astronomical clock will calculate time, dates, and planetary positions for thousands of years to come.

The old observatory in Copenhagen has a spiral corridor used as a racetrack.

Climb to the top of its spiral spire for spectacular views of Copenhagen.

Danish tourist destination well known for open stalls where vendors sell marijuana on the street.

Copenhagen's celebrated theme park and gardens.

This 19th-century aqueduct provides insights into how water was supplied to Victoria on the island of Gozo before modern plumbing.

This church is named for one of the most dramatic tales in the early Christian church.

The remains of a 1st-century aristocratic Roman town house featuring beautiful well-preserved mosaics.

This unique building in the main square stands out among the city's typically Baroque architecture.

Two geological phenomena in one precarious locale: a towering stone window, and a deep blue void.

This garage is frozen in the late 1990s, full of rare and untouched cars and motorcycles.

This spectacular dome managed to survive after being bombed in World War II, in an event known as the "Miracle of Mosta."

This prison on the Maltese island of Gozo is almost 500 years old, and they have the graffiti to prove it.

Centuries ago, red and white wine poured from the statue's breasts whenever a new Venetian ruler was elected.

This medieval castle was reconstructed by Carlo Scarpa.

A gorgeous example of 13th-century Gothic architecture.

These elaborate gothic monuments honor Verona's medieval lords.

A whale rib was used to advertise the store by the arch that offered exotic goods from far away.

It’s said this crypt was the setting for the tragic finale of the Shakespeare play.