above the floor. The initial seating capacity was 11,563. On June 23, 1965, work began to add to the rear of the structure. The addition was four stories high and included additional seating and an escalator to improve patron access to the upper levels. It expanded seating to 13,375 in 1966 with standing room for 3,300 during hockey games. In addition to the new seats, the original 11,563 seats were replaced at a cost of $23 each and new boards and timeclocks were installed. While not one of the most decorative, architect C. Howard Crane considered Olympia to be one of his most significant buildings. He noted the importance of the refrigeration system buried beneath the concrete. Within the of available floor space were of piping. The system was replaced in 1967 and the final modification to the building was the addition of private boxes in 1970. References 1927 establishments in Michigan 1980 disestablishments in Michigan Basketball Association of America venues Basketball venues in Michigan Defunct boxing venues in the United States Defunct college ice hockey venues in the United States Defunct indoor arenas in the United States Defunct National Hockey League venues Demolished buildings and structures in Detroit Demolished music venues in the United States Demolished sports venues in Michigan Detroit Pistons venues Event venues established in 1927 Former National Basketball Association venues Indoor ice hockey venues in Detroit Defunct indoor ice hockey venues in the United States Olympia Entertainment Sports venues completed in 1927 Sports venues demolished in 1987 Sports venues in Detroit Detroit Red Wings