BOK Center

The BOK Center, or Bank of Oklahoma Center, is a 19,100-seat multi-purpose arena and a primary indoor sports and event venue in Tulsa, Oklahoma, United States. Designed to accommodate arena football, hockey, basketball, concerts, and similar events, the facility was built at a cost of $178 million in public funds and an additional $18 million in privately-funded upgrades. Ground was broken on August 31, 2005 and a ribbon-cutting ceremony involving Tulsa musicians Garth Brooks and Hanson took place on August 30, 2008. The arena's schedule of concerts and other events began on August 31 with a community choir hosted by Sam Harris.

César Pelli was asked by Tulsa city officials to create an arena that would be an architectural icon. To achieve this, Pelli employed cultural and architectural themes of the city, including Native American, art deco, and contemporary styles, making heavy use of swirling circular elements in the exterior and interior designs of the building. A 103-foot (31 m), 600-foot (180 m) long iconic glass facade featuring 1,600 350-pound (160 kg) panels wrap around the building in an escalating motion leaning at a five-degree angle. 33,000 stainless steel panels produced and installed by Zahner continue the upward spiraling path around the circumference of the structure. The interior follows the motion, with grand staircases that wrap around a portion of the building from the main lobby. In total, the building's design required 350,000 square feet (33,000 m2) of exterior stainless steel panels, 75,000 square feet (7,000 m2) of glass, 30,000 cubic yards (23,000 m3) of concrete, and 4,000 tons of structural steel.

The arena encompasses 565,000 square feet (52,500 m2) and reaches a maximum height of 134 feet (41 m). Inside, the bowl area's ceiling rests 120 feet (37 m) over the base floor and a 930-foot (280 m)-long HD ribbon screen wraps around the three-level seating area. There are 17,343 fixed seats, each ranging from 20 inches (51 cm) to 22 inches (56 cm) wide — an average width greater than the industry standard, including that of the Oklahoma City Arena in Oklahoma City. Actual capacity fluctuates with configuration patterns, and total seating can vary from 13,644 to 19,199 — 13,644 for partial-use concerts, 16,582 for arena football, 17,096 for hockey, 17,839 for basketball, and 19,199 for center stage concerts. The bowl area's second floor, an exclusive carpeted level with a complete bar, houses press areas and 37 luxury suites, each with 15 22-inch (56 cm) seats and furnished gathering and kitchen areas. In the main concourse, more than 130,000 square feet (12,000 m2) of terrazzo flooring has aggregate that contains 70 percent mother of pearl. Private funding exceeded original forecasts, and unexpected increases in revenue from corporate sponsorships, donations, and purchases of box seats and luxury boxes paid for an advanced light display for the glass wall that wraps around the front of the building and the scoreboard.