Stocking up on the world's best beer requires a pilgrimage to a monastery drive-through.

The Devil’s own choice when he needs a drink in Brussels.

150 or so scrounged-up lamps, chandeliers, and lanterns light up this alley in central Athens.

The only ancient site that remains on the south bank of the sacred Ilissos river.

These caves secretly held national treasures during World War II.

The oldest standing Byzantine church in Athens is tucked within a monastery in the middle of an upscale shopping district.

A Byzantine-era church hidden in a wooded area below the Acropolis.

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 oldest cemetery of modern-day Athens blends the modern and ancient worlds.

The Cycladic architecture makes this Athens neighborhood feel like an island paradise hidden in the shadow of the Acropolis.

This mystical orb covered in strange symbols is thought to have been used in ancient Greek magical rituals.

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

A small cell adjacent to this church was once the bedroom for a renowned saint.

Legend has it that this bronze orb, which sat atop an ancient Egyptian obelisk, once held the ashes of Julius Caesar.

These hut foundations are believed to be the residence of Romulus, founder of Rome.

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

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

One of several skulls claiming to belong to the beheaded St. John the Baptist is on display at this Roman church.

In Rome’s Jewish ghetto, a 200-year-old bakery still makes the neighborhood’s historic sweets.

This historic recreationist school churns out warriors that may very well have had a fighting chance in Rome's pits of the day.

A treasure trove of Renaissance-era funerary art in a Roman church built on top of Nero's grave.

This ancient Roman prison is decorated with an upside-down cross not as blasphemy but as saintly tribute.

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