With mild temperatures all year long, there’s not really a bad time to visit. Spring and fall have the most comfortable weather for exploring, visiting parks, and participating in festivals. The city gets the most crowded in the summer, even though that's when the heat and humidity are highest. San Antonio’s downtown is compact and easy to explore by foot, taxi, or bus. Most city attractions are located within the circular highway, Loop 1604. To the north lie many museums and the scenic, affluent neighborhoods of Monte Vista and Alamo Heights. The old Spanish missions are sprinkled in southeast and most of the theme parks are situated on the outskirts of town. Those planning to visit theme parks and Hill Country will want to rent a car.