Discover the best of downtown chicago on this adventurous 3 hour walking tour known as the loop the citys central business district is famous for its soaring skyscrapers public artworks and other architectural gems its also home to the one of a kind pedway system a wide ranging network of tunnels bridges and walkways that connects over 40 blocks as you explore both street level and subterranean chicago your guide will provide all kinds of facts and stories about the citys fascinati