The historic old town of Frankfurt was one of the largest half-timbered towns in Germany until the extensive destruction in World War II with its around 1250 half-timbered houses, most of which date from the Middle Ages. It was one of the most important tourist attractions for Germany. The historic old town was largely destroyed by the air raids on Frankfurt am Main in 1944. The streets and the entire district are predominantly characterized by quickly and easily erected buildings from the 1950s and 60s. A handful of the most important historic buildings, churches and squares were restored or reconstructed, especially around the main square, the Römerberg.