The Sapporo TV Tower (さっぽろテレビ塔, Sapporo Terebi-tō), built in 1957, is a 147.2-metre-high (483 ft) TV tower with an observation deck at a height of 90.38...

indicates the year of completion. List of tallest structures in Japan "地下鉄「さっぽろ駅」直結の北海道最高層・総戸数 624 戸を誇るタワーマンション" [Hokkaido's tallest tower apartment with...