Inside this church, a monument honors the first burial site of the famed philosopher.

The scars of a remarkably organized public protest to save 13 elm trees are still visible in this Stockholm park.

These three pillboxes still remain as a witness of the Spanish Civil War in a park of Madrid.

Not far from Madrid, a set of perfectly preserved trenches date back to the Spanish Civil War.

This fascinating and poignant museum chronicles every imaginable aspect of Spanish colonialism in the Americas.

A subterranean relic of the Spanish Civil War hides below this picturesque park.

Shrapnel, dynamite, bullets and Franco couldn't destroy this bust, rescued and kept hidden as a family secret for over 40 years.

A rare set of strings by famed instrument maker Antonio Stradivarius is on display in the Royal Palace.

A unique exhibit lets blind people experience famous works of art and architecture with their hands.

This sweet-toothed bear searching for snacks has been a symbol of Madrid for decades.

An iconic and controversial ancient Iberian funerary urn with a hauntingly penetrating gaze.

The little church's beautifully frescoed ceiling has earned it the nickname “the Sistine Chapel of Madrid.”