Gallery Information All exhibitions and events in the O'Sullivan Art Gallery are free and open to the public. Gallery Hours Tuesday: 10 a.m. - 4 p.m. Wednesday: 10 a.m. - 4 p.m. Thursday: 2 p.m. - 8 p.m. Friday: 10 a.m. - 4 p.m. Location Regis University's Lowell (Main) campus 3333 Regis Boulevard (aka 50th Avenue) Denver, CO 80221 Regis University's Lowell Campus is located just north of the intersection of Federal Boulevard and Interstate 70. At Federal Boulevard, from the Interstate exit, go North to Regis Boulevard (50th Avenue), turn west and head toward Lowell Boulevard. At Lowell Boulevard, turn north again and continue to Entrance 4 (which will be the second entrance on your right). Bear to the right up the hill. At the top of the hill is the O'Sullivan Art Gallery, immediately east of Main Hall in the Fine Arts Building. Find us on our interactive map.