The Mike and Arline Walter Pyramid on the campus of the California State University Long Beach. The Long Beach Pyramid was designed by Don Gibbs and built by the Nielson Construction Company of San Diego. The building of Long Beach Pyramid cost approximately $22 million dollars. Each side of the perimeter of Walter Pyramid measures 345 feet (105 m), making it a mathematically true pyramid. It is one of only three true pyramid-style buildings in the United States, the others being Luxor Las Vegas in Las Vegas, Nevada and Pyramid Arena in Memphis, Tennessee. Walter Pyramid rises 18 stories above the Long Beach skyline and its external is uniformly clad in sheets of dark-blue corrugated aluminum.