Macabre astrological automaton clock dating to the late 1400s.

Two stunning 17th-century libraries and a cabinet of curiosities.

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

This cafe offers a curated collection of treats and tipples made by monks and nuns.

This home designed for chocolate magnate Antoni Amatller is an exquisite treasure-box of Catalan Modernism.

One of the most photographed buildings in a city known for its Modernista architecture is an abandoned squat.

Barcelona's only remaining tram system takes riders to the Tibidabo funicular.

This generously endowed statue once stood guard outside a Roman home.

The oldest giants in Catalonia are now displayed in a 14th-century Gothic church.

Turntable anonymously received orphans, alms, and groceries.

The 2,000-year-old Roman columns are hidden within Barcelona's Gothic Quarter.

This Irish museum in a historic 19th century market pays tribute to the glory of butter.

The ancient tomb acts as a calendar that keeps perfect time.

An eccentric garden of sculptures crafted in India decorate an Irish green space dedicated to Alan Turing.

The gorgeous library at Trinity College is home to remarkable treasures of Irish identity.

An Irish church where an 800-year-old mummy is reaching out of his coffin as if to shake hands.

This tiny home was originally a narrow alleyway.

A luxurious 1880s hotel with its fair share of Tiffany stained glass, Edison electricity, and of course, ghosts.

Gutted airplanes slowly decay in a Florida field.

St. Augustine's record-setting narrow street was designed to protect against pirates.

In this case, 'zero' marks the spot where the iconic Old Spanish Trail ends.

An unremarkable wooden wheel built into the side of one of Rome's oldest hospitals was part of a policy to reduce infant exposure.

Throughout this shopping mall are medieval ruins that were discovered during the mall's construction.

The slender brass strip in Prague's Old Town Square was used to tell time from 1652 to 1918.