New Mosaics of Ravenna Invasion Map #24 Edition of a 1000 folded maps 2017 Here's a chance to own a limited piece of Invader history, a map that is long sold out and very much in demand. The folded map shows the location of all the Mosaics Invader placed on the streets of Ravenna during his Invasion of the city in two waves in 2014 and 2015. Ravenna is often considered the world capital of mosaics due to its numerous works dating from antiquity to the early Middle Ages, many of which are UNESCO World Heritage sites. The "invasion" of Ravenna was therefore intended as a tribute, which was rather well received, as the vast majority of the mosaics are still visible and some have already been restored.