This church was constructed on the site where St. Philip the Apostle preached to the ancient Athenians.

This historic structure has been used as a mosque, a barracks, a prison, a school, and a bakery.

These caves secretly held national treasures during World War II.

A Byzantine-era church hidden in a wooded area below the Acropolis.

Where commuters walk through remnants of an ancient Greek necropolis.

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

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

This mystical orb covered in strange symbols is thought to have been used in ancient Greek magical rituals.

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

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

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

This distinctive Crescent City tradition dates back to the days of horse-drawn carriages.

This cathedral dedicated to Louis IX, sainted King of France, holds many secrets.

The world-record holder for the longest bridge stretching continuously over water.

The oldest family-run restaurant in the United States is a living museum of New Orleans dining history.

The only rotating bar in New Orleans has been slowly spinning since 1949.

An exhibition devoted to the life (and posthumous taxidermy form) of the last known representative of the Pinta Island Tortoises.

Since the 1700s, this old barrel has acted as a post box that relies on the kindness of travelers.

Ecuador’s historic seat of government has been quietly looted in recent decades, and no one knows how or by whom.

A short volcanic hill in Quito doubles as a stellar observation point of an iconic statue.

The world's tallest aluminum statue is also the world's tallest image of a winged Virgin Mary.

This 12-inch-tall wooden sculpture of a winged Virgin Mary has inspired much devotion and countless replicas.

This historic street in Quito is known for its seven stone crosses—and one presidential assassination.

It took 160 years to complete the most ornate church in Ecuador.