Charles Jencks is the American landscape architect and designer behind this incredible flight of stairs. Called The Universe Cascade, it has 25 landings that mark the important shifts in cosmic history. Starting at the top, in the present day, and descending down, visitors are moving through 13 billion years of cosmic evolution. The steps finally disappear into the dark water below, which represents the mystery of the origin of the universe. At The Garden of Cosmic Speculation in Scotland.