The Benjamin Franklin National Memorial is located in the rotunda of The Franklin Institute Science Museum in Philadelphia, Pennsylvania. Dedicated by Congress in 1976, Memorial Hall features a 20 foot high marble statue of Ben. Sculpted by James Earle Fraser, the statue weighs 30 tons and sits on a 92-ton pedestal of white Seravezza marble. Originally opened in 1938, Memorial Hall was designed by architect John T. Windrim and modeled after the Pantheon in Rome. The Hall is 82 feet in length, width, and height. The domed ceiling is self-supporting and weighs 1600 tons. The floors, walls, columns, pilasters, and cornices are made of rare marbles from Portugal, Italy and France.