The annual Berlin Festival of Lights is one of the largest illumination events in the world. For 12 nights every October, Berlin‘s iconic landmarks, historical buildings, cultural sites, streets and squares are transformed by stunning illuminations and lights shows. The admission-free festival, which is running from October 10 through 21 this year, also incorporates tons of city-wide cultural events. It’s well worth a trip if you’re in the region. if not, check-out the photos and videos online.