Näsinneula is an observation tower in Tampere, Finland, overseeing Lake Näsijärvi. It was built in 1970-1971 and was designed by Pekka Ilveskoski. It is the tallest free-standing structure in Finland and the second tallest observation tower in the Nordic countries at a height of 168 metres (551 ft). The tower opened in 1971 and is located in the Särkänniemi amusement park. There is a revolving restaurant in the tower 124 metres (407 ft) above the ground; one revolution takes 45 minutes. The design of Näsinneula was inspired by the Space Needle in Seattle. The idea of a revolving restaurant was taken from the Puijo tower in Kuopio. Beacon lights at the top of the tower display a weather forecast: in this case two yellow bars and one green bar means cloudy.