A hidden three-foot-wide house separates these two regal churches.

One of the most beautiful bookstores in the world hides a neo-Gothic interior behind an art nouveau facade.

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

The world's oldest bookshop still in operation.

The best place in the world to buy tinned fish.

Hidden beneath a beautiful overlook you’ll find the history of the city depicted in comic strip format next to a pay toilet.

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

This iconic Parisian bookstore doubles as the "Tumbleweed Hotel" for traveling writers.

Giant granite sculptures representing family on the northern coast of Spain.

The oldest Roman lighthouse still in use.

This enormous censer uses a pulley system installed over 400 years ago.

The mysterious remains of a martyred teenage saint are venerated inside a small country chapel.

An ancient Egyptian temple in the middle of Madrid, Spain.

Gaudí's famously flamboyant architectural style is on full display in this sprawling park and garden.

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

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.

This kitsch eatery is chock-a-block with bric-a-brac.

In a city crazy for seashells this museum educates and amazes visitors using the wonder of cast-off exoskeletons.

When a supermarket opened up shop within a medieval building it became protected by UNESCO on a technicality.

There is a strange little carving of a person seemingly crushed by a pillar behind the remains of St. Thomas Aquinas.

Historic medieval fortified city in southwest France.

Mountain where Jesus was first tempted by the Devil.

A vista of the city and sea from atop the little-known viewing deck on an unassuming Columbus statue.