The city of Berlin, Germany is a vibrant metropolis filled with many historic structures - such as bridges, viaducts, buildings, and houses. On this sunny day, one can explore the infrastructure of the city, with its roads, walkways, and lanes, and take in the unique street art, graffiti, and stone and brick walls. Automobiles, motor vehicles, and subway tracks create a unique urban landscape, providing a fascinating profile of the architecture in this European city.