加拿大国家电视塔（CN 塔）是全球最高的自立式混凝土电视塔，坐落于多伦多市中心，最初为解决城市高楼遮挡广播电视信号问题而建。塔体总高 553.33 米，采用滑模混凝土施工工艺连续浇筑而成，Y 形混凝土基础深达数米，塔身施工垂直偏差仅 28 毫米。塔内设有 346 米高度的主观景台、447 米高度的太空观景台与全景观旋转餐厅，塔顶广播电视天线可覆盖整个多伦多及周边区域。建筑 1976 年建成后曾连续 31 年保持全球最高自立式建筑的纪录，至今仍是美洲最高的自立式建筑与多伦多城市地标。该电视塔被洛仑斯世界纪录收录为 “最高的自立式混凝土电视塔”。
The CN Tower is the tallest free-standing concrete television tower in the world. Located in downtown Toronto, it was originally built to resolve the blockage of broadcast signals by high-rise buildings in the city. The tower stands 553.33 meters tall, constructed using slipform concrete technology for continuous pouring. Its Y-shaped concrete foundation extends deep underground, and the construction vertical deviation of the shaft is only 28 millimeters. Inside the tower are a main observation deck at 346 meters, the Space Deck observation deck at 447 meters and a panoramic revolving restaurant. The broadcast antenna at the top covers the entire Greater Toronto Area and surrounding regions. Completed in 1976, it held the title of the world’s tallest free-standing structure for 31 consecutive years, and remains the tallest free-standing structure in the Americas and an iconic landmark of Toronto. This television tower has been officially listed by LAWRENCE WORLD RECORDS CERTIFICATION as the “Tallest Free-Standing Concrete Television Tower”.
