Indiana University Natatorium is a swimming complex on the Indiana University-Purdue University Indianapolis campus in Indianapolis, Indiana, United States. It also serves as the home of the IUPUI School of Health & Human Sciences (including physical education, tourism management, pre-physical and pre-occupational therapy) with its offices on the second level and the Polaris Fitness Center on the first level. The Human Performance Lab is housed in the basement of the Natatorium building. The Natatorium has hosted hundreds of NCAA Division I Men's Swimming and Diving Championships, NCAA Division I Women's Swimming and Diving Championships, Big East Conference Swimming & Diving Championships, USA Swimming, USA Diving, and USA Synchronized Swimming Championships, local/regional meets, as well 11 Olympic Trials in swimming, diving, and synchronized swimming. The Natatorium has the largest seating capacity of any indoor pool in the United States; it can hold up to 4,700 spectators. Competition pool The Natatorium's main competition pool is 50-meters with eight racing lanes. Two moveable bulkheads allow for long or short course events as well as hosting water polo and synchronized swimming. The seating capacity of the Natatorium is 4,700, making it the largest indoor pool in the United States. There is also room for additional seating of 1,500 on deck. The depth of the pool is at the ends and at the center of pool. Water temperature is kept at . The main pool contains six underwater windows for television and coaching analysis. There are approximately of water in the main pool. More than 100 American records and 15 world records have been set in the pool. Diving well The diving well of the Natatorium has hosted many local and national diving events, including the 2008 Olympic trials. The diving well has a depth of over and holds more than of water. It has four 1-meter and four 3-meter boards and five diving platforms of 1, 3, 5, 7.5, and 10 meters in height. The pool is kept at approximately . There are also two underwater windows for television coverage and coaching analysis. History The Natatorium was completed in 1982. Counsilman-Hunsaker served as the design consultant for the project. The architects were Browning, Day, Pollack & Mullins, Inc. and Edward Larabee Barnes, Architects. The facility was host to the USA Olympic Diving Trials in 1984, 1988, 1992, 1996, 2008, 2016, and 2020. It hosted the USA Olympic Swimming Trials in 1984, 1992, 1996, and