There are actually quite a few lakes in the city, but Bueng Kaen Nakhon, located in the city centre, is one of the best. There are a number of restaurants, and coffee shops located along the banks, and come evening, several street food vendors set up to serve an array of local delicacies, including bbq chicken satays, pad thai and freshly made papaya salad. Bueng Kaen Nakhon is roughly 4km long, and is a great place for cycling, and even if you're feeling adventurous, there are paddle boats for rent.