There's a couple spots you have to check out if you want your Austin pics to be instagram-worthy.
Austin 360 Bridge Overlook
Austin is a beautiful city! One of my favorite spots for pics is overlooking the Austin 360 Bridge. It's a short climb up and it's easily accessible off the highway.
This is the highest point around Austin, and you can see the entire skyline from here as well. It's also a very short hike up and easily accessible from the highway.
Austin's newest hotel has some nice spots for a pic too...