designed for children up through first grade, the National Geographic Giant Screen Theater (the largest digital screen in Ohio), and an outdoor Big Science Park. On November 22, 2014, COSI reopened its 60-foot diameter, 220-seat Planetarium (Ohio's largest) with all new digital projection. In addition, there is a History of COSI exhibit. The building also includes three large galleries for traveling exhibits and special event hosting, a Dive Theater in Ocean, the Galaxy Theater in Gallery 3 (its name a remnant of when Gallery 3 was once the Space exhibit), the Gadgets Stage, the Atomic Cafe, the Science2Go! retail store, and five meeting rooms utilizing refurbished areas within the former Central High School, which the new COSI location was built around. COSI Science Festival On May 1-4, 2019, COSI, joined by Battelle, NASA, businesses, organizations, universities, and STEM leaders, hosted over one hundred community events showcasing science across Central Ohio as part of the inaugural COSI Science Festival. The 2019 COSI Science Festival was among the largest science events in Ohio history and included four days of events at central Ohio businesses, community centers, libraries, schools, and more. As part of the COSI Science Festival, COSI, Battelle, NASA, and other Central Ohio STEM leaders formed an unprecedented partnership that impacted 40,000 people. In May 2020, due to the COVID-19 pandemic, an all-digital COSI Science Festival garnered 118,990 total online views of 39 separate virtual science events. History COSI opened on March 29, 1964, as a venture of the Franklin County Historical Society. COSI is a founding member of the Science Museum Exhibit Collaborative (SMEC) and a long-standing member of the Association of Science-Technology Centers (ASTC). From its 1964 opening, COSI was housed in Memorial Hall, a Columbus landmark constructed in 1906. COSI closed at the Memorial Hall location on East Broad Street on September 6, 1999, and re-opened two months later on November 6, 1999, at its new location on the Scioto riverfront in downtown Columbus. The 320,000 square foot facility was designed by Japanese architect Arata Isozaki, who designed an elliptical, geometric, "blimp" shaped structure composed of 159 curved concrete panels. The museum is designed to appear progressively futuristic from the neighborhood of Franklinton, while from downtown Columbus it uses the exterior of the original Central High School to blend into the city. Shortly after the move to the riverfront, the museum experienced a shortfall of funds. With an