The arena that hosted the 2017 "Billboard" Music Awards opened  on what date?
T-Mobile Arena T-Mobile Arena is a multi-use indoor arena on the Las Vegas Strip in Paradise, Nevada. Opened on April 6, 2016, the arena is a joint venture between MGM Resorts International and the Anschutz Entertainment Group.
Denver Auditorium Arena Denver Auditorium Arena was an indoor arena located at the corner of 13th and Champa Streets in Denver, Colorado. It was constructed as the Denver Municipal Auditorium in 1908 during the administration of Denver Mayor Robert W. Speer. The building was opened on July 7, 1908, and was the site of the 1908 Democratic National Convention.