Locals dubbed it the "Owl Building" because of its bird-like appearance.

Saint Borromeo often prayed in this austere crypt during the 16th century.

The initials "GW" mark where one of Scotland's most important Protestant martyrs was burned at the stake.

Depending on how it is measured, this lighthouse can claim to be the tallest in Europe and the tallest conventional lighthouse in the world.

More than 7,000 gallons of water pour over these cascading red quartzite waterfalls every second.

This ranch house in Jackson's Elraine neighborhood was home to the civil rights icons and the site of a shocking assassination.

A sculpture in memory of a homeless man much loved by the city of Parma.

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

Yup, that's where the name came from.

Art blooms at this unique outdoor gallery along the banks of the Arkansas River.

These spartan apartments are provided to clergymen visiting Vatican City.

This equestrian statue of Constantine the Great has been the subject of criticism for centuries.

Historic fortifications form the boundary of Vatican City, but it’s not entirely surrounded by walls.

The accidental discovery of this gilt bronze head led archaeologists to find the Roman Baths in the city of Bath

One of Indiana's only natural sandstone arches is nestled between resort ruins and an old Boy Scouts camp.

In the hills of southern Indiana is the idyllic studio and museum of legendary artist T.C. Steele.

These 500-year-old frescoes depict the city in its glory days.

The childhood home of the Wright Brothers in Dayton.

This cheery fruit farmer welcomes visitors to a classic roadside emporium.

The only Leonardo Da Vinci painting in the Western Hemisphere.

Browse through a century of this principality's first popular export.

This Arkansas town is known for its gangster history, its healing waters, and now its brews.

One of the three perfect vellum copies of this historic book known to exist is on display in a specially-designed case.

The world's largest collection of historic U.S. military naval vessels.