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

The oldest tourist graffiti in the world helped archaeologists identify the Pyramid of Djoser.

This ancient structure is widely thought to be the oldest intact pyramid in the world.

First founded in 1472, this is the oldest bank in the world. Its history may explain why we call financial institutions "banks."

A tiny Greek Orthodox church from the Ottoman era hides on a busy city street.

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

A section of the long chain that blocked enemy ships from entering Constantinople.

A small etching on the white marble parapet was written in runic script by a Viking mercenary.

A small but very fascinating fountain in the center of Rome with four books and a deer carved.

This unassuming bridge is most likely one of Michelangelo's unfinished masterworks.

A freedman baker’s lavish tomb has a relief showing various stages of Roman bread making.

A large replica of a monumental Roman inscription is located on the side of this museum.

This small Roman arch was transformed into a dwelling by the founder of the Trinitarian Order.

An oasis of beauty, tranquility and botanical research in the middle of Rome.

The Italian revolutionary's legendary wife is portrayed on horseback waving a gun and holding her child in this memorial on the Janiculum.

Plaques on its facade commemorate the Tiber's most destructive deluges.

Italian horror legend Dario Argento’s own shop hides a sinister museum-dungeon in the basement.

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

One of Rome's most picturesque and original bridges was also a popular choice for Grand Tour artists.

A statue representing a lost Roman profession that was vandalized for centuries.

This statue is the only female representation of Rome's "talking statues."

An ancient Roman temple first dedicated to an emperor's wife is now a church.

According to local folklore, this Roman sepulcher was once a throne for the Devil.

The remains of this 2nd-century Roman temple are incorporated into a modern building.