Renaissance hospital featuring a rotating door into which unwanted babies were dropped.

The first botanical garden, a feather in the cap of the Grand Duke of Tuscany.

Five candy-colored villages on the Italian Riviera.

Drink wine handed out through a window as part of an age-old tradition.

View the ancient remains of buildings and the ancient "River of Hades" before hopping on a train.

Legend says this sacred tree was a gift from goddess Athena.

Heralded as the world's first theater, these ruins are often overlooked as they reside in the shadows of the Acropolis.

The railway carts travelers to central Athens's highest peak, which offers stunning vistas of the city.

This ancient Greek place of assembly and marketplace is being revealed layer by layer below the modern Athens cityscape.

Local folklore claims that this wall was not built for defense, but to provide labor during a time of famine.

The medieval "Bearded Man" relief still serves as a clever flood warning marker.

The hidden lair of an alchemist rediscovered in a 2002 flood.

Dedicated to the works of the legendary special effects artist.

Dedicated to the man who saved hundreds of children from Nazi-occupied Czechoslovakia.

A quasi-futuristic roof sits atop a medieval Bohemian monastery damaged during World War II.

The palace window through which Protestant nobles flung two Catholic regents, thus sparking the Thirty Years' War.

Europe's largest natural bridge has a 19th century royal chateau built into its side.

An enormous and lavish Gothic church in Czechia.

A church of bones, decorated with 40,000 human skeletons.

Be(w)ar(e) the moat around this historic Czech castle.

Bullet holes in the church wall are a reminder of the violence that followed the assassination of a high-ranking Nazi officer.

This mundane post marks the old location of the city's main postal hub.

Oldest building in California still in use.

It appears as if a man is standing behind this giant airport clock, painting the hands in real time.