The main campus in Provo, Utah, sits on approximately 560 acres (2.3 km2) nestled at the base of the Wasatch Mountains and includes 295 buildings.[38] The buildings feature a wide variety of architectural styles, each building being built in the style of its time.[2] The grass, trees, and flower beds on BYU's campus are impeccably maintained.[40][41] Furthermore, views of the Wasatch Mountains, (including Mount Timpanogos) can be seen from the campus.[38] BYU's Harold B. Lee Library (also known as "HBLL"), which The Princeton Review ranked as the No. 1 "Great College Library" in 2004,[42] has approximately 8.5 million items in its collections, contains 98 miles (158 km) of shelving, and can seat 4,600 people.[43] The Spencer W. Kimball Tower, shortened to SWKT and pronounced Swicket by many students, is home to several of the university's departments and programs and is the tallest building in Provo, Utah.[44][45] Furthermore, BYU's Marriott Center, used as a basketball arena, can seat over 19,000 and is one of the largest on-campus arenas in the nation.[citation needed] Absent on the campus of this church owned university is a campus chapel.