This striking sculpture of Icarus honors Greece's fallen flyers.

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

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

Where commuters walk through remnants of an ancient Greek necropolis.

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

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

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

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

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

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.

A relic of Victorian grandeur hides beneath a busy South London road.

A public display of random paleontology.

A symbol for the opposition to nuclear power around the world.

The final home of the legendary Danish sailor said to have lived to be 146 years old.

This colorful artistic feature atop a Danish art gallery allows visitors to stroll through a rainbow.

Forget Hollywood, one of the biggest stars in the world can be found in Roanoke, Virginia.

A sacred site for Native Americans surveyed by George Washington and owned by both King George III and Thomas Jefferson.

A former waterfront market is now in the center of town due to some interesting Boston engineering.

An enormous steel waterfall is a nod to the substance that shaped Britain's Steel City.

A tribute to the women who quietly kept the local steelworks alive during both world wars.

One of the last doorless, continuously moving elevators still in use in the U.K.

One of the shortest streets in York has an especially odd name.

This network of narrow, medieval passages has the most delightful name.

A century-old tradition has culminated in a small but singular collection of feline effigies.