Prominently visible from Interstate 35 and a dominant feature of the eastern side of the University's campus, the Lyndon Baines Johnson Presidential Library is a rectangular-marble monolith with a smooth, un-ornamented exterior that was completed in 1971. It was the first presidential library to be built in Texas and has some unique attractions, like the animatronic-LBJ robot that tells jokes to visitors. Designed by Gordon Bunshaft, the library's Great Hall is constructed so that viewers look up to see four stories of archives behind glass.