Points of interest include the Alamo; La Villita, the reconstruction of a 250-year-old Spanish-speaking settlement; the Spanish governor's palace (c.1749); the Paseo del Río, a downtown river walk; the Hertzberg Circus Collection; and numerous old homes. The Hemisfair Plaza, site of the 1968 world's fair, contains the Institute of Texan Cultures and the 750-ft (229-m) Tower of the Americas. A new central library designed by Mexican architect Ricardo Legorreta opened in 1995. Among San Antonio's educational institutions are Trinity Univ., St. Mary's Univ., Univ. of the Incarnate Word, Our Lady of the Lake Univ., and the Univ. of Texas at San Antonio. The Southwest Research Institute is notable for its research into the technical problems of the region. The city has artists' colonies, an art institute, and numerous museums including the San Antonio Museum of Art. It is also home to the Spurs (National Basketball Association).