A miniature model of the iconic Stockholm department store.

This colossal ancient jaguar sculpture was used as a vessel for the hearts torn from sacrificial victims.

This vast masterpiece of Moroccan architecture spreads across 20 acres.

An iconic photograph from the Spanish Civil War saved this shrapnel-scarred historic house from destruction.

This cafe offers a curated collection of treats and tipples made by monks and nuns.

This lucky bronze frog was gifted to Madrid by a casino.

A disquieting Aztec sculpture displays hundreds of stone skulls representing the victims of human sacrifice.

This macabre masterpiece of a mural is one of Francisco Goya's "Black Paintings."

These spectacular, symbolic serpents lie within the shadow of the Great Temple.

The legendary bathing site of a Moorish queen is actually part of a Roman fish farm.

A curious memento mori hangs in the magnificent Cathedral of Segovia.

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

A delightful museum devoted to the history of books.

This small museum tucked within a subway station holds pieces from Madrid's past.

Charles Dickens described the concert room in this amazing Victorian hall as "the most perfect room in the world."

This immense scene of a cosmic battle between a jaguar and serpent illustrates the Aztec concept of the duality of life.

A plaque claims this artwork outside a children's hospital was used in the 1998 Quidditch World Cup.

This memorial, built by fascist dictator General Franco in 1960, has been repurposed by the people of Catalonia.

Among the oldest structures in Madrid, these Moorish walls once guarded the medieval city of Mayrit.

There's a labyrinth of manmade tunnels stretching for over an acre beneath Bristol.

The Swedish flag over this small naval fort signals that the nation is at peace.

England's steepest street has such a drastic incline that locals tie their parked cars to lampposts when it gets icy.

The abandoned funicular tunnel was a secret base for the BBC during World War II.

The remains of the second-oldest zoo in Europe can be seen within these library gardens.