請用 英語 描述 天津廣播電視塔的概況 ，急！

Tianjin television tower, taking both the word "tower-day", was built in 1991, 415.2 meters (second in Asia, the world's fourth), Songru sky, among the world's tower Lin. Tower Bridge Niegong days at the banks, the Purple Mountain Road to the east, the day the television tower for the FM radio Launch Center. October 1, 1991 completion of the launch, which lasted 3 years and 4 months. With a total investment of 175,000,000 yuan, covers an area of 22 hectares, the construction area of 11,500 square meters and 415.2 meters high tower (the second Asia, the world's fourth). Billion cost, re-tower more than 4 million tons. UFO-storey tower 7, the construction area of 4450 square meters, is located at 248.5 to 278 meters Department. District 22 hectares of water tower, tower edge of a fine-sounding name "Heaven Lake Tower."