A stunning 18th-century site where pilgrims ascend by a series of punishing stairs only to return via funicular.

Ancient catacombs form the foundation for this Rococo orgy of a church.

Portugal's National Pantheon has a history of curses, collapses and financial problems.

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

The verdant mossy ruins of a Franciscan monastery lie in the remote Sintra hills awaiting exploration.

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

Elaborately carved to showcase the glorious wealth that the age of exploration brought to the Portuguese empire.

This restored Portuguese cafe may well be the most beautiful place in the world to grab a Big Mac.

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

The stunning interior of this Gothic church is covered in ornate gold details.

A 16th century chapel decorated with bones, skulls, and entire bodies hanging from the wall.

The world's oldest bookshop still in operation.

Legacy of the earthquake that nearly wiped Lisbon off the face of the Earth.

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

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

It's just another skyscraper, but it's shaped like '90s cell phone.

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

The Spanish writer devoted hours to writing 'Don Quixote' in this house.

Along the pavement of this neighborhood in Madrid are quotes from famous authors.

This medieval synagogue survived the Inquisition as a hospital and church.

The facade of this 16th-century building is decorated with carvings of 300 seashells.

One of Madrid's most beloved statues is of an anonymous citizen.

Originally used to sell brandy, the bull-shaped billboard became an iconic symbol of Spain.

After the queen of Spain had a dream where these statues fell and crushed her, they were removed from the palace and given new homes around Madrid.