The Inner Harbor Center is a premier Baltimore address in the heart of the central business district and there are great panoramic views of the harbor from the eighth floor. Inner Harbor itself is one of the most visited areas of the city and has been one of the major US seaports since the 1770s. The building is surrounded by many amenities and boasts a 1,300-space parking garage with covered access to the main lobby. Baltimore is an established center of medicine and biosciences and is a national headquarters for medical treatment and research with two pioneering teaching hospitals. Traditional blue-collar jobs have been replaced over time by the service sector including law, finance, hospitality, entertainment and maritime commerce and there has also been growth in the technology market. Baltimore is also home to three Fortune 500 companies.