A statue in the center of Dublin dedicated to one of their favorite sons of rock & roll.

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.

This frog-themed restaurant was frequented by Picasso, Saint-Exupéry, and more.

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

A series of abstract, silly sculptures represent the works of a great modern classical composer.

Site of a classic 19th-century physics experiment to prove the earth is rotating.

Hundreds of stone stairs and a winding medieval bridge connect this haunting Spanish island to the mainland.

Underground tunnels remain beneath this abandoned mental asylum.

Giant topiary dog once played a role in a terrorist bomb plot.

Eat the ultimate iteration of Portugal's most beloved pastry.

This unreal Portuguese palace looks as though it's made from a pile of different castles.

This eccentrically decorated palace is replete with grottoes, fountains, tunnels, and caves.

An ancient and majestic fortress that played an integral role in Portugal's road to independence.

Step back in time at this 19th-century kiosk.

Ring the bell to enter a bar that looks equal parts museum and old curiosity shop.

The scorched Lisbon church that survived two earthquakes and a massive fire.

The best place in the world to buy tinned fish.

The world's oldest bookshop still in operation.

Sip cherry liqueur at a bar dating back to 1840.

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

Vast stretch of tide-pools with a unique Moroccan charm.

This vast masterpiece of Moroccan architecture spreads across 20 acres.

Deliberately hidden for centuries, the magnificent Saadian Tombs were eventually uncovered in 1917.