For a picnic spot away from the beach, you can't beat the Manavgat Waterfalls, about 13 kilometers northeast of Side. The waterfalls sit upon the Manavgat River, which rises in the Seytan Mountain Range of the Taurus Mountains.
Set amid a landscaped garden, the area is hugely popular with both local families and tourists on sunny weekends. Try to pick a weekday for a visit if you'd prefer the site to be less crowded.
You can walk right up to the falls using a network of gangways to get close-up views. The thunderous roar of the water is a dramatic soundtrack to a visit here.