I love the exremity of it. The extremely large and small details that make it such an amazing use of the space. The varied levels, new and historical objects, sence of play and wonder with each passage and object that is discovered. A feeling that everything is possible in and around the space, nothing is off limits to the imagination. Nothing seems to be mapped out, half the fun is trying to get to an area and discovering all these peculiar and amazing spots along the way. I also love that you can educate yourself through the space by realizing that different spaces used to be or what the objects were used for, or , you can simply let your imagination create the stories that the space suggests and enjoy the ride.