extant building in the Quad Cities, is on the north bank of the island. Rock Island Centennial Bridge over the Mississippi River between downtown Davenport and Rock Island, completed in 1940 to commemorate Rock Island's 100th anniversary. The five arches of the 3,853-foot through-arch bridge often are used as a symbol of the Quad Cities. Rock Island County Fairgrounds in East Moline, also the site of the Quad City Speedway Rock Island Auction Company from the Discovery Channel show Ready, Aim, Sold! Vibrant Arena at The MARK – a 12,000-seat arena in Moline (formerly The Mark of the Quad Cities, the iWireless Center, and the TaxSlayer Center). Vander Veer Botanical Park is a 33-acre (130,000 m2) botanical garden in the Vander Veer Park Historic District of Davenport, Iowa. It is believed to be one of the first botanical parks west of the Mississippi River. The Quarter – a site in East Moline, alongside the Mississippi River, featuring shops, restaurants, condominiums, boat docks, sports and interpretive centers, and a working lighthouse, currently under development. (Geographical coordinates: ) Chicago, Milwaukee, St. Paul and Pacific Freight House, referred to locally as the "Freight House", is an entertainment venue TBK Bank Sports Complex, also known as the BettPlex, is a state-of-the-art sport and entertainment complex. Containing eight full-size volleyball and basketball courts. Four indoor and five outdoor sand volleyball courts, 10 lighted outdoor baseball and softball fields, the BettPlex is a 45 million dollar sporting facility that was created to host weekend sporting tournaments in the Quad Cities. Noteworthy companies Arconic Cobham plc Deere & Company (also known as/branded: John Deere) Genesis Health System Group O Guardian Industries Happy Joe's KONE, Inc (formerly Montgomery Elevator) Lee Enterprises Lewis Machine and Tool Company Modern Woodmen of America Nestlé Purina PetCare QCR Holdings Sears Seating (also known as Sears Manufacturing) Von Maur Whitey's Ice Cream Top employers According to Quad Cities website, the top employers in the Quad Cities area are: Notable people Eddie Albert, actor, Rock Island Ken Anderson, football player and coach, Rock Island Pat Angerer, football player, Bettendorf Matthew Ashford, actor, Davenport Tavian Banks, football player, Bettendorf Bonnie Bartlett, actress, Moline Scott Beck, filmmaker, Bettendorf Bix Beiderbecke, jazz musician, Davenport Louis Bellson, drummer, Moline Vincent Hugo Bendix, inventor and industrialist, Moline Ken Berry, actor, Moline Joseph W. Bettendorf, industrialist, Bettendorf (Gilbert) William P. Bettendorf, industrialist, Bettendorf (Gilbert) Chief Black Hawk, band leader and