A striking memorial recalls thousands of Bolognese men and women killed fighting fascists in World War II.

Once the fallout shelter of a dictator, this sprawling bunker is now a combined history museum and contemporary art gallery.

Over 100 towers were built in Bologna during the Middle Ages, but only 22 survive.

Legend has it this fountain built to symbolize the Pope’s power hides a strange secret concerning Neptune's manliness.

St. John the Baptist's forearm is housed in this remote 11th-century monastery.

A solar-powered primary school inspires hope and experimentation in a country ripe for energy innovation.

A UNESCO-protected spiritual seat of the Old Serbian Kingdom and Empire.

A monastery considered a state-protected cultural monument of exceptional importance, founded in the 14th century by Serbian King Stefan Dečanski.

This 15th-century Ottoman bridge was modified to keep up with the changing course of the river Erenik.

A 14th-century Serbian Orthodox church that was once converted into a mosque under the much-disfavored Ottoman Empire.

This lonely minaret with an unusual decorative symbol is all that remains of a historic Ottoman mosque.

Depending on the region's rainfall, this church may be partially submerged.

These abundant, over-the-top monuments are so widely scattered that they define the entire compact capital cityscape, often leading to jokes about whether there are more statues than residents.

This fortress dates back to the 6th century and is also the site of a controversial abandoned restoration project.

A volcanic tunnel illuminated by natural skylights offers a shaded respite from the desert sun.

The hallowed remains of a 900-year old Ancestral Pueblo great house.

During World War II, over 13,000 people of Japanese ancestry were forcibly removed from their homes and incarcerated in this camp in the Idaho desert.

An impressive waterfall nestled in the cliffs of Idaho's Snake River Canyon.

The only bridge in the United States where BASE jumping is legal without a permit year-round.

Supposedly Satanic numbers adorn this preserved submarine sail.

The world's first nuclear power plant is open to visitors looking to role-play a meltdown.

This rustic old building is said to be the most photographed barn in America.

Ute tour guides have been sharing the ancient dwellings and rock art inside this large park with visitors for more than 40 years.

The marker offers a rare chance to be in four U.S. states at once, though there's some controversy over its geographic accuracy.