If you're hankering for a taste of the natural world while staying in Antalya and don't feel like heading all the way to Köprülü Canyon or the extra twenty minutes to the Kursunlu Waterfalls, then the Upper Düden Waterfall is an excellent option. Located in a small park that boasts some well-cultivated gardens, the premiere attraction is undoubtedly the 15 m high/20 m wide curtain of water that splashes to the rocks below. Even better, there is a natural cave behind the falls for onlookers to peer through. Because there is actually little else to do in the park, we suggest stopping out for a quick swim and some pictures on the way in or out of Antalya.
There's no mistake in the activity name. There are actually TWO falls, the second of which deposits directly into the Mediterranean Sea. This 40 m cascade is much better as seen from a boat and can be reached quite easily from touristy Lara Beach to its west. If you're willing to pay for a ride, then this may be your best option of the two; otherwise, check out the free waterfall/cave combo of the upper falls and move onto bigger and better things in your Antalya itinerary.
Note:If you're coming from central Antalya, then your quickest route to the upper falls would be via Yeşilırmak Caddesi.