History of the world's tallest buildings
The tallest building in the world, as of 2022, is Burj Khalifa. The title of "world's tallest building" has been borne by various buildings, such as the Rouen Cathedral and the Empire State Building.
Architecture of Toronto
The most prominent landmark in Toronto, and its best known symbol, is the CN Tower. It was the world's tallest free-standing structure for 31 years, from its completion in 1975 until Burj Khalifa in Dubai, United Arab Emirates surpassed it in 2007; it remains the tallest free-standing "tower" in the Western Hemisphere. The CN Tower is used as an observation tower, as well as a communications tower. Another landmark structure is Casa Loma. Constructed by E. J. Lennox during the early 1910s, it is a Gothic revival-style castle located on Walmer and Davenport roads. It was originally the residence of Sir Henry Pellatt, a Canadian financier and soldier. The city later took over the castle when Pellatt could no longer afford to keep it. The building presently operates as a museum.