The World is full of many odd traditions, however the
festival of "Baby Jumping" in the small village of Castrillo de Murcia near Burgos, Spain is perhaps one of the most strangest.
Image from Wikimedia Commons is by Celestebombin
Image from Flickr is by Helder Rul
Image from Flickr is by Zach Campbell
Image from Wikimedia Commons is by Jtspotau
A fine YouTube from Lonely Planet;
View location in Google Earth / Google Maps. (Unfortunately in low resolution).
Source of info and more info: Daily Mail Online / Wikipedia