In the area of the River Walk, there are over 2000 street-level parking meters. Most of these are enforced 8 am - 6 pm, Monday through Saturday. Outside of these hours, parking is free. Also, on Tuesdays from 5 pm to 2 am there is free parking in parking garages and lots run by the city (https://www.downtowntuesday.com/About-Downtown-Tuesday).