According to the brochure, "Landmarks is the public art program of The University of Texas at Austin. Its projects beautify the main campus and engage visitors and the university community with great works of art".
I've had the pleasure of taking two walking tours with Landmarks in the last year or so. One was a daytime tour of some of the sculptures on campus. The second was a night tour that offered the opportunity to see some artworks against the night sky.
I was able to snag a few photos during the night tour, but would recommend checking them out in person if you have the chance!