The custom of votive offerings is practised in many Catholic countries. In Spain it dates back to the 14th Century, but they became particularly prolific from the 17th Century onwards. The Sanctuary in Alcalá contains exvotos going back to 1758. They give a unique picture of how people lived, and the dangers they faced and continue to face in their daily lives: sickness and disease, war, falling off horses, accidents at work, falling into wells or rivers, traffic accidents. Some have been restored, many more are in storage because there is simply not enough room to display them all.
The American historian and anthropologist Jerome Mintz, who lived in the area in the 1970s, photographed many of them and they can be seen on the website Archivo Exvotos Revista Sans Soleil. Some examples are shown below.
More exvotos here - click on the images to enlarge them
The Sanctuary is open to visitors from 10 am to 1 pm and from 4 till 8 pm.