This architecturally eclectic early-20th century mosque was built as a place of worship for the Islamic followers of a Jewish messiah.

A two thousand year old brothel uncovered in Northern Greece.

One of the most photographed locations in the entire city.

A little-known park with unusual, half-ruined structures and a mystical energy.

An abandoned Byzantine fortress and notorious prison.

Legend says it was constructed with the destroyed pillar of an ancient Greek Temple.

A man's head is enshrined beneath a statue near the first building constructed for the modern Olympic Games.

A crushed gate and giant bronze head serve as a reminder of Greece's fight for freedom.

A historic building houses one of the most important archaeological institutes in Europe.

There are many Byzantine-era churches still standing in Athens, but this is the only one with a 2,500-year-old column rising through its roof.

These ancient ruins hide in plain sight next to a dessert shop.

The only surviving choragic monument is a trophy awarded in 334 BC for the winning dramatic chorus.

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

An ancient octagonal weather station named for the eight Greek gods of wind.

The site where hundreds of Greeks were tortured by the Nazi secret police is now a cosmetics store.

This small 16th-century church in Athens is almost entirely surrounded by a modern building.

This gem is often wrongly overshadowed by the larger, newer Metropolis church in Athens.

Preserved portions of Athens's ancient defenses are on display in a subterranean parking garage.

Where commuters walk through remnants of an ancient Greek necropolis.

The ruins of an ancient Roman tomb hidden in the basement of a trendy clothing store.

The secular incarnation of a religious meditation.

A closer look at this somewhat faded hotel by the Corinth Canal reveals the architectural undertones of a genius.

This legendary city has been a tourist attraction for centuries.

This slumbering beast honors the Bavarian soldiers who died in Greece during a 19th-century typhoid outbreak.