The London pub overlooks where the Mayflower was moored before setting sail for the New World.

Dictionary Johnson’s favorite feline.

The pretty iron lamp is a reminder of the architecture underneath London's streets.

One of America's founding fathers lived in this London lodging between 1757 and 1775.

The place where World War I began.

A pair of connected skyscrapers form this symbolic gateway.

Destroyed Serbian army headquarters sits half crumbled in a largely revitalized Belgrade.

Nikola Tesla's ashes are held in a golden sphere, surrounded by his works.

Gargoyle head that brings good luck.

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.

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

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

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

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

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

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

Gladiators once walked this ancient, subterranean passage.

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

Tear apart fatty, gently charred lamb chops with your bare hands.

This Ottoman-era Greek Orthodox Church was built to honor Agia Pareskevi, a Christian saint.

One of the best-preserved medieval streets in Europe.

Learn about the sweet, storied legacy of beekeeping in ancient Greece.

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