Pruitt–Igoe housing built. 1955 Peabody Coal Company relocates to St. Louis. Hellmuth, Obata and Kassabaum architects in business. 1958 – Landmarks Association of St. Louis established. 1959 – St. Louis sit-in during the Civil Rights Movement. 1960 Population: 750,026. Sister city relationship established with Stuttgart, Germany. The National Football League's Chicago Cardinals relocate to St. Louis. They will remain through 1987. 1962 – St. Louis Community College established. 1963 University of Missouri–St. Louis established. MetroBus begins operating. Planetarium opens. 1964 LaClede Town (housing) opens. Imo's Pizza in business in Shaw. Cardinals win the World Series, defeating New York Yankees in seven games 1965 Gateway Arch erected. Regional East-West Gateway Council of Governments established. 1966 – Busch Stadium opens. 1967 Poplar Street Bridge completed. St. Louis Blues - National Hockey League - NHL Expansion ice hockey team formed. K-SHE 95 (94.7) FM radio station begins broadcasting its current Rock n' Roll format. Cardinals win the World Series, defeating Boston Red Sox in seven games 1969 – Laclede Gas Building constructed. 1970 Student antiwar demonstration. Population: 622,236. 1972 - Demolition of Pruitt-Igoe begins and will last four years. 1974 St. Louis Port Authority created. Sister city relationship established with Suwa, Japan. 1976 – Sister city relationship established with Lyon, France. 1977 St. Louis Convention Center opens. James F. Conway becomes mayor. Sister city relationship established with Galway, Ireland. 1979 – Sister city relationship established with Nanjing, China. 1980s–1990s 1980 - Contemporary Art Museum St. Louis established. 1981 – Gwen B. Giles is the first woman and first African-American appointed to lead the St. Louis City Assessor's Office. 1982 - Cardinals win World Series, defeating Milwaukee Brewers in seven games 1986 Express Scripts and Galleria Cinema in business. Southwestern Bell Telephone Building constructed. 1987 Sister city relationship established with Bologna, Italy. Lindbergh Plaza cinema in business. Football Cardinals play final season in St. Louis before relocating to Arizona 1989 – One Metropolitan Square (hi-rise) built. 1990 Population: 396,685. Sister city relationship established with Georgetown, Guyana. 1991 - Hindu Temple of St. Louis founded. 1992 – Sister city relationships established with Szczecin, Poland and Samara, Russia. 1993 – MetroLink begins operating. 1994 Kiel Center arena opens. Sister city relationship established with Saint-Louis, Senegal. 1995 St. Louis Rams football team relocates from Los Angeles.. Trans World Dome (stadium) opens. 1997 City website online (approximate date). Ameren Corporation in business. Clarence Harmon becomes mayor. St. Louis