Picture of St. Olaf's Church By Night, Tallinn, Estonia

-- A night view of St. Olaf's Church (Oleviste kirik) in the heart of Tallinn, Estonia's capital. Founded in the 12th century, this 15th century building was by then the tallest in the world, with a height of 159m. Although heavily bombed at the end of WWII, most of the historical part of Tallinn survived, and its unique preserved ensemble of medieval buildings and walls was declared a World Heritage site by UNESCO in 1997.