Riga's skyline and President Castle at night in winter, Old Town, UNESCO World Heritage Site, Riga, Latvia, Europe

horizontal color image outdoors night copy space riga latvia europe clear sky sky building architecture skyline city urban scene riga castle castle fortress built structure river water spire tree tower past history no people travel destinations travel unesco world heritage site unesco castles fort forts fortified fortification historic historical travel destination tourist destination tourist destinations cities urban colour image color colour nighttime outdoor outside rivers flowing water towers