other arenas built during the same time period, in part because a number of its innovations did not work as intended. The most serious problem was the weathered steel exterior, which could not withstand Atlanta's humid climate. Rather than provide a protective seal, it never stopped rusting. In fact, it corroded much more quickly than was anticipated. Gaping holes eventually formed in the walls, which made it possible for non-paying fans to climb through. Chain link fences were installed to prevent this, but did little to hide the damage. Thus, the structure began to look dated by the early 1990s, despite being only 20 years old. Built on a former railroad yard, the Omni settled more than its designers expected. There were unanticipated stresses in the space frame roof, which often leaked water. In the late 1980s and early 1990s, a growing number of NBA and NHL teams began to construct arenas with better amenities for their high-end customers to increase revenue. These amenities included luxury boxes, club seating, and massive club concourses. Some of these new arenas had as many as 200 luxury boxes. By comparison, the Omni had only 16 luxury boxes and no club level. It also became a disadvantage during Atlanta's explosive population growth. Although the Omni hosted many events, it lost more than its share due to the smaller capacity and lack of amenities compared to newer buildings in other cities. By the start of the 1990s, an effort began to build a replacement. A new arena would have likely been needed in any event due to the Omni's structural problems. This also stemmed from Ted Turner's desire to own an NHL franchise; the Flames had been sold to Canadian businessmen and relocated to Calgary, Alberta a decade earlier. The NHL determined the Omni was not suitable even as a temporary facility, and would only grant Atlanta an expansion team if Turner guaranteed a brand-new arena would be in place by the time the new team took the ice. Despite the arena's close proximity to the CNN Center, Georgia World Congress Center, and the Omni MARTA station, the Omni was imploded on July 26, 1997. Philips Arena (now State Farm Arena) was constructed in its place, and opened on September 18, 1999. The demolition of the Omni forced the Hawks to split their home games for the 1997–98 and 1998–99 seasons between the Alexander Memorial