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

A hugely vast Irish landscape of barren rock that stretches for miles.

This single room has survived the centuries with almost no deterioration.

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

Construction of Barcelona's iconic (but controversial) church is expected to be completed in 2026—a century after the death of its architect.

This singular Irish dolmen is more Frank Lloyd Wright than upright stonehenge.

The oldest restaurant in the world is this old-world Spanish eatery, still known for its suckling pig.

Relics of the 1894 Midwinter Exposition continue to delight visitors today.