Johns Manville Plaza is a 404-foot-tall skyscraper (123 m) in Denver, Colorado. It was completed in 1978 and has 29 floors. The building was designed by Hellmuth, Obata and Kassabaum, owned by Crescent Real Estate Equities Company, and is the 16th tallest building in Denver. Reflective solar glass windows alternating with 5-foot-wide columns (1.5 m) makes up the outer walls.