San Francisco, the City in the United States, is the commercial, cultural and financial center of North California. There are approximately 50 hills present within the city limits. It is a hub of five major banking institutions and various companies. The city has beautiful restaurants and is the epicenter of excitement. The lavish lifestyle and hopping nightlife is the biggest tourist attraction in the city. The city boasts epitome of architecture and the modern wonders such as the Golden Gate Bridge which is the longest suspension bridge. Fisherman's Wharf which offers the best dining experience. The Golden Gate Park with lush green is the best place to explore and relax. Alcatraz Island has scenic beauty and federal prison. Union Square has fancy hotels and retail outlets. The Chinatown embraces Chinese culture. Exploratorium is the fun place for kids, The Presidio of San Francisco which was the former military base and now a park.