These unusual rooms on wheels are holdovers from the 1960s.

This isn't your average roadway—it's actually a National Park and a transportation pioneer.

The romance of early commercial flight still fills this Art Deco destination.

Volcanic stone sentinels stand watch at a Korean Bell Garden in Virginia.

An organ located deep within a cave, whose "pipes" are the geological features of the cave itself.

A sculpture made from recycled materials and hand-blown glass dedicated to transportation and transformation.

FDR's Art Deco hospital tower was hopelessly inefficient.

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

Edgar Allan Poe's old dorm is now a shrine to the author's legacy.

The story behind the mysterious symbol painted in front of the historic university's famous Rotunda.

Unscathed for almost 2,000 years, the best preserved Roman triumphal arch is in a small southern Italian city.

According to the legend, this structure was built in a single night with the help of the devil.

This amazingly well-preserved villa just outside Pompeii boasts rare examples of ancient Roman paintings.

Before it was buried by volcanic ash, this fast-food restaurant fed the hungry hordes of ancient Rome.

Also known as the Temple of Poseidon, this is one of the best-preserved Greek temples in the world.

The only visible remains of this ancient Greek underground temple is its roof protruding from the earth.

Skulls and skeletons are omnipresent in this church dedicated to souls trapped in purgatory.

A popular legend claims that the famous pizza was invented at a restaurant in this alley.

San Gennaro, the patron saint of Naples, greets pedestrians between these narrow city streets.

This medieval city gate is now a blend of the past and the modern world.

A special area of the National Archaeological Museum of Naples is located inside a metro station.

A former Roman town that was once the home of Scipio Africanus.

The maritime museum that boasts the largest nautical library in the western hemisphere.

Headquarters of the legendary clairvoyant's readings, spiritual hospital, and massage school.