The newly redecorated Colonnade I Center offers excellent views of downtown and the beautiful Texas hill country around San Antonio. The business center is adjacent to the South Texas Medical Center (STMC) in the popular Colonnade area, with immediate access to Interstate 10. The city's economy is based on healthcare (especially biosciences), financial services, tourism and government, and there's a strong focus on the defense industry and the military. San Antonio is home to five Fortune 500 companies and a couple of global energy/petroleum corporations, as well as numerous regional headquarters for companies involved in insurance, telecoms, banking, and aircraft production. The busy Medical Center serves 38 counties and includes many different facilities covering research, educational institutions, hospitals, including a teaching hospital, and schools.