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

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

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

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

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

Where commuters walk through remnants of an ancient Greek necropolis.

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

A 2,000-year-old computer demonstrates remarkable engineering and astronomical precision.

Roman ruins top white travertine terraces formed by ancient hot springs.

A charming beach town in Turkey captures all the colors of the rainbow.

This famous city eluded concrete detection until the early 2000's.

This institution honors Nepal’s most storied warriors.

This extensive collection of dead bugs may be the world's most idiosyncratic and personal insect museum.

The headquarters of the Mahanikai school of Buddhism, Thailand's largest monastic order.

A treasure trove of pathological, forensic, parasitological, and anatomical specimens.

More than 100 colorful residents stand post in this seaside Australian city.

Bangkok's men with dangerous jobs come here in search of protective talismans.

This dazzling Buddhist temple was constructed from over one million ceramic tiles salvaged from a British shipwreck.

Bangkok celebrated its shifting monarchy with a militaristic homage to democracy.

One of Australia's largest secondhand bookstores.

A self-funded cemetery with a long list of inhabitants.

Roadside attraction outside of a recycling center.

Come for the flowers, stay for the bats!

This rare effigy of the author spent years lost in storage.