Catamaran Tower and Wheeler Tower are located near to each other in the same Quadrant of the Dome. Catamaran Tower is known as a particularly popular tourist spot and resort, with casinos and shopping centres. Wheeler Tower is known for several observation areas.
You can see the four Spines on the underside of the Done, and some rounded attendant structures used for monitoring Spire weather conditions and general structural integrity. The Spines also house science and engineering facilities and some rail-launch facilities for cross-continental assisted flights. Dedicated crews and vehicles for repair, firefighting and other civil services work and live mostly within each individual Spine.