invention trade show, since 1984; Tekko, a four-day anime convention, since 2003; Anthrocon, a furry convention, since 2006; and the DUG East energy trade show since 2009. Arts and culture Entertainment Pittsburgh has a rich history in arts and culture dating from 19th century industrialists commissioning and donating public works, such as Heinz Hall for the Performing Arts and the Benedum Center, home to the Pittsburgh Symphony Orchestra and Pittsburgh Opera, respectively as well as such groups as the River City Brass Band and the Pittsburgh Youth Symphony Orchestra. Pittsburgh has a number of small and mid-size arts organizations including the Pittsburgh Irish and Classical Theatre, Quantum Theatre, the Renaissance and Baroque Society of Pittsburgh, and the early music ensemble Chatham Baroque. Several choirs and singing groups are also present at the cities' universities; some of the most notable include the Pitt Men's Glee Club and the Heinz Chapel Choir. Pittsburgh Dance Council and the Pittsburgh Ballet Theater host a variety of dance events. Polka, folk, square, and round dancing have a long history in the city and are celebrated by the Duquesne University Tamburitzans, a multicultural academy dedicated to the preservation and presentation of folk songs and dance. Hundreds of major films have been shot partially or wholly in Pittsburgh. The Dark Knight Rises was largely filmed in Downtown, Oakland, and the North Shore. Pittsburgh is also considered as the birthplace of the modern zombie film genre after George A. Romero directed the 1968 film Night of the Living Dead. Pittsburgh has also teamed up with a Los Angeles-based production company, and has built the largest and most advanced movie studio in the eastern United States. Pittsburgh's major art museums include the Andy Warhol Museum, the Carnegie Museum of Art, The Frick Pittsburgh, Pittsburgh Center for the Arts, the Mattress Factory, and the Carnegie Museum of Natural History, which has extensive dinosaur, mineral, animal, and Egyptian collections. The Carnegie Science Center and associated SportsWorks has interactive technology and science exhibits. The Senator John Heinz History Center and Western Pennsylvania Sports Museum is a Smithsonian affiliated regional history museum in the Strip District and its associated Fort Pitt Museum is in Point State Park. Soldiers and Sailors Memorial Hall and Museum in Oakland houses Western Pennsylvania military exhibits from the Civil War to present. The Children's Museum of Pittsburgh on the North Side features interactive exhibits for children. The eclectic