The Texas State Capitol building in Austin is open daily to the public and their guided tours are free! There are many instagrammable spots inside including the interior of the large central dome, the main hallways as well as the skylights on the exterior of the building (which are PERFECT for night shots!). As the sixth tallest capitol building in the nation (even taller than the U.S. state capitol building!), you will be able to see the building from almost everywhere. With this beautiful building in the background, you will be able to get instagrammable skyline shots from all around Austin.