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

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

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

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

An ancient Greek monument and a Byzantine church coexist inside this cave.

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

A sharp sculpture made of thousands of pieces of jagged glass.

This pink watchtower served as the seat of the Greek government after independence from the Turks.

Replicas of Apollo's leonine stone guard cats still line a sacred row in Greece.

Giant marble phalluses on the sacred island of antiquity.

A Bronze age settlement on the Greek island of Santorini might have been the inspiration for Plato's Atlantis.

This black sand beach was crafted from volcanic explosions including the historic Minoan eruption.

Gladiators once walked this ancient, subterranean passage.

Blowtorches, tuna, and a jolly, chain-smoking proprietor mark this beloved street-food stand.

A plaque marks the site directly below the mid-air detonation of the atomic bomb over Hiroshima.

Peace Park and the Atomic Bomb Dome.

An eerie reminder to the horrors of World War II.

Japanese national treasure originally built in 593 CE.

Steaming blood-red hot spring from hell.

This statue of the "shiny uncle of Beppu" was erected in 2007.

A bibliophile's heaven that contains hundreds of bookstores, offering over a third of secondhand books for sale in Tokyo.

Japanese island famous for poison gas and fluffy bunnies.

Open-air museum with an elaborate sculpture garden, stretching for over 70,000 square-meters.

Unbeknownst to many, an ancient burial mound hides in plain sight in Ueno Park.