Planned in the 1920s, initial demolition to make room in the 1940s and 50s, initial construction started in 1972, and it opened in 2017, so… depending on your p

Planned in the 1920s, initial demolition to make room in the 1940s and 50s, initial construction started in 1972, and it opened in 2017, so… depending on your perspective, it took up to ~90 years, but arguably no less than 45 years.