Seventy-five miles of limestone caves host more than a million bottles of wine beneath a sleepy Moldovan town.

Once built to inspire young Soviet minds through astronomy, this dome now stands as a quiet relic of a vanished era.

Visitors are treated to a stained glass kaleidoscope interior inside this work of art.

This sublime architectural marvel is a rare example of an expressionist church.

An ultra-modern diversity park in Denmark has turned an entire city block electric pink.

Copenhagen's celebrated theme park and gardens.

A bronze tribute to Mika Häkkinen's 1998 Monaco victory.

This public amphitheater was once a key part of Monaco’s defense strategy.

This statue of the great Argentinian car driver is located near a famous curve of the Monaco Grand Prix.

Touching the iron railings of Tarragona's balcony to the Mediterranean is said to bring good luck.

This Roman arena once played host to bloody gladiatorial battles.

Long tunnels run under the ancient chariot racing circuit to the tower.

Stunning Roman aqueduct used for 1900 years and still standing.

Few symbols capture the spirit of Catalonia more vividly than its tradition of human towers.

This hidden courtyard in the Andorran capital hosts a unique contemporary sculpture park.

An open-air "garden" of mural art that changes weekly.

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

Turntable anonymously received orphans, alms, and groceries.

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

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

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

The somber sculptures commemorating Irish Famine on the river Liffey in Dublin.

An 80-year-old plane tree is devouring an iron bench at Ireland's oldest law school.

Despite the name, this 16th-century structure in Galway wasn't built by the Spanish.