Public opinion is still divided on this enormous sculpture in front of Baltimore's Penn Station.

A public work of art that also provides some relief from the summer heat.

These caves secretly held national treasures during World War II.

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

Where commuters walk through remnants of an ancient Greek necropolis.

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.

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

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

Outside the Department of Transportation, a collection of artifacts honors the history of how we get around.

Don't get it twisted: This is the oldest pretzel bakery in the United States.

Thirteen pastel palaces in downtown Charleston add a gorgeous splash of color to the city.

This historic boathouse was constructed using salvaged lumber from burned barns.

This Roman arena once played host to bloody gladiatorial battles.

Originally a brothel during the Klondike Gold Rush, this bar once used dolls to denote when ladies were working.

This Kyoto Starbucks takes coffee drinkers back in time.

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

Thomas Jefferson's estate is home to hundreds of varieties of historic fruits and vegetables.

Dine like an American revolutionary at Colonial Williamsburg.

The first and only carousel with a lineup entirely of insects.

The land is home to swimming ponies and a legendary 18th-century treasure.

The only royal palace on U.S. soil has been a territorial capitol, a military headquarters, and a prison for a queen.

A museum dedicated to the history and exploration of both popular music and science fiction.

One of the oldest continuously-operated gay bars in the United States is allegedly haunted by Truman Capote and Tennessee Williams.