This 400-year-old tree is actually an immigrant from North America.

The tradition of open-air secondhand and antiquarian bookselling in Paris dates back to the Renaissance.

The narrowest street in Paris.

This iconic Parisian bookstore doubles as the "Tumbleweed Hotel" for traveling writers.

This modest marker near Notre Dame identifies the very center of Paris.

An "inside out" building in the historical center of Paris, featuring Europe’s largest modern art museum.

This demon atop the Notre-Dame de Paris looks utterly bored.

Walk upon the mementos of the dead in this Parisian courtyard paved with medieval tombstones.

The site where two doves fell in love.

A monument at Alicante Marina honors a little-known hero of the Spanish Civil War.

Once used to calculate the various levels around the country.

Down this yellow brick road, visitors are treated to toadstool houses and massive mushroom sculptures.

A well-restored ancient archaeology site gives a real feel for life during the Roman age.

This magnificent market stands as a poignant symbol of the suffering caused by the Spanish Civil War.