One of the smallest bookstores on the planet.

The world's oldest bookshop still in operation.

This Industrial Age architectural and engineering gem helps visitors and residents alike traverse Lisbon, “The City of Seven Hills.”

Step inside the first house designed by Catalan architect Antoni Gaudí, considered to be one of the first Art Nouveau buildings.

One of Antoni Gaudí's most classic buildings is well-known for its "dragon-back" design.

Hidden under a center for the elderly are the dungeons which were used during the Spanish Inquisition.

A haven for book enthusiasts across the street from Retiro Park.

The remains of this misplaced church were moved here stone by stone.

Once a resting spot for King Fernando VII.

Feast on buckets of garlicky snails.

The humble tomb of an Argentine general, hand-built by his son using stones brought down from the Andes.

A beautiful young girl said to have been buried alive in her coffin…

With its vast selection of books, comics, and records, this nearly 70-year-old open-air market always rewards the patient browser.

Abandoned bull fighting ring, slowly falling apart in Uruguay.

Constructed on the ruins of a convent, this tower saved countless lives.

An artist's statement of new uses for ordinary and discarded materials.

This beautiful fountain was sculpted by a female artist who was ahead of her time.

Buenos Aires' city of the dead contains some very famous remains, including Eva Perón.

This historic, palatial theater is now one of the world’s most beautiful bookstores.

Xul Solar was an artist of alternate worlds, inventor of languages, and dreamer of utopias.

A pocket of serenity in hectic Buenos Aires, complete with a peaceful courtyard and massive library.

Martha's Vineyard's most beloved speakeasy sells late-night pastries.

A former waterfront market is now in the center of town due to some interesting Boston engineering.

The homestead of American patriot John Adams.