Heading into the 21st century, new facilities for the sciences included the renovation of the Olin Science Building, the construction of the Rooke Chemistry Building in 1990 and the completion of a new Biology Building in 1991. The McDonnell Residence Hall and Weis Music Building were inaugurated in 2000, the O'Leary Building for Psychology and Geology opened in the fall of 2002, and the new Kenneth Langone Recreational Athletic Center opened during the 2002–03 academic year. The newest engineering facility, the Breakiron Engineering Building, opened in 2004.