Krka Falls is a great day trip to take from Split. It's a gorgeous National Park to roam around. The water is seafoam green and turquoise. The main attraction is the cascading waterfalls when you enter the park. Bring your swimsuit, you can swim in the pool of water in front of them. I recommend jumping into the water early so you can miss the heavy crowds in the afternoon. Also it's cooler in the morning, when we arrived in August it was around 90 degrees Celsius. So hot!
Tip: Wear water shoes because there are a lot of rocks you can slip on or stub your toe. Ouch!
Location: Lozovac, Croatia