13708098 - Housesteads Roman Fort, Vercovicium, AD 124, Granary showing provision for underfloor heating, Hadrians Wall, UNESCO World Heritage Site, Northumbria National Park, Northumberland, England, United Kingdom, Europe71373580 - First heated bridge for cyclists in Tuebingen, Baden Wuerttemberg, Germany, Europe71373579 - First heated bridge for cyclists in Tuebingen, Baden Wuerttemberg, Germany, Europe71373575 - First heated bridge for cyclists in Tuebingen, Baden Wuerttemberg, Germany, Europe
