What happens when you cross a mayor and a painter?

Bronzes and busts that once stood in the city's main squares are now relegated to a small hidden courtyard.

In the heart of Tirana, this underground nuclear bunker has been transformed into a museum.

Liechtenstein's royal family calls this medieval alpine castle home.

In one of the smallest countries in the world stands an original Salvador Dalí sculpture.

One of the most spectacular bridges in Spain spans a narrow chasm that divides the city of Ronda.

Three bridges and one giant canyon make up this fantastic Spanish settlement.

A curious carving hides on a marble column in the Mosque-Cathedral of Córdoba.

Spain's unique Mosque-Cathedral has been a place of worship for both Muslims and Christians throughout its history.

Founded as a refugee camp, now a popular tourist spot.

The Roman city was the birthplace of various emperors and is home to one of the empire's most impressive architectural feats.

An eerie collection of the surviving structures from a past celebration of the future.

The world's largest wooden structure.

Spain's largest bullring offers a unique glimpse at architecture and history.

The final resting place of the great navigator, or maybe his brother.

This former charity hospital for elderly clergy houses some of Seville’s most treasured paintings.

This mighty white oak in Bethesda survived both the American Revolution and the construction of Washington D.C.'s metro red line.

A striking memorial to the 21 lives lost in an explosion at the Washington Arsenal

The privately owned cemetery that holds room for Washington's finest when they step down from life.

Franciscan monks created a facsimile of the Holy Land for North Americans who couldn’t afford the trip overseas.

Largest Roman Catholic church in North America.

Live data is transmitted from the Atlantic coast to instantly recreate the ocean waves in this fountain at the NOAA headquarters.

The tallest The Church of Jesus Christ of Latter-day Saints temple in the world soars above the Beltway.

A suburban museum tells the story of a historic transportation network and even provides rides in antique trolley cars.