Boston is a major industrial, financial, and educational hub and has one of the finest ports in the world. The city's banking and financial services, insurance, and real estate sectors continue to drive Boston's economy. Boston is also a leading city in health care, with 25 inpatient hospitals and numerous community health centers. The city's unique cultural and historic heritage makes it a center of tourism, and its hotel industry ranks among the highest in the nation in occupancy. Boston's other businesses are in high technology, biotechnology, software, and electronics.