Cosmo Dog Park

There's a lake here, which for most dogs is reason enough to lose their minds entirely. Cosmo Dog Park in Gilbert is a sprawling off-leash park with a swim-ready lake, a separate fenced area for smaller or shyer dogs, an agility course for overachievers, shaded ramadas, and water stations throughout. It's a full afternoon, not just a quick lap around a fenced lot, and Phoenix New Times named it the best dog park in the city.