The Palace of Culture and Science (Polish: Pałac Kultury i Nauki; abbreviated PKiN) is a notable high-rise building in central Warsaw, Poland. With a total height of 237 metres (778 ft), it is the second tallest building in both Warsaw and Poland (after the Varso Tower), the sixth tallest building in the European Union and one of the tallest on the European continent. At the time of its completion in 1955, the Palace was the eighth tallest building in the world, retaining the position until 1961; it was also briefly the tallest clock tower in the world, from 2000 until the 2002 installation of a clock mechanism on the NTT Docomo Yoyogi Building in Tokyo, Japan.