Which building holds the title of the tallest building in the western hemisphere?

The tallest building in the western hemisphere is One World Trade Center, which stands at a height of 1,776 feet when including its spire. It was completed in 2014 and serves as a symbol of resilience and renewal after the events of September 11, 2001.

One World Trade Center not only surpasses other notable buildings, including the Empire State Building and the Willis Tower, but it also incorporates advanced design and safety features that reflect modern engineering standards. Its height symbolizes the year of the Declaration of Independence, adding a historical significance to its stature.

While the Empire State Building and the Willis Tower have held records for height in the past, they have been surpassed. The CN Tower, although very tall, is primarily a communications and observation tower rather than a building designed for occupancy. This distinction is important when determining titles associated with skyscrapers.