San Diego International Airport is located a short 10-minute drive from the city center. It is generally advisable to rent a car to explore the city or utilize the various public transport or private taxi options. Walking can be difficult as many of the tourist destinations are quite spread out. Visitors should consider taking advantage of various discount activity cards such as the Go San Diego Card and Southern California CityPass. San Diego is considered one of the safest cities in California, however visitors should maintain basic precautions that they would in any major tourist destination.