Geodesic dome Johnson solids, Archimedean solids, and Catalan solids. These structures may have some faces that are not triangular, being squares or other polygons. In 1975, a dome was constructed at the South Pole, where its resistance to snow and wind loads is important. On October 1, 1982, one of the most famous geodesic domes, Spaceship Earth at Epcot in Walt Disney World Resort in Bay Lake, Florida, just outside of Orlando, Florida, opened. The building and the ride inside of it are named with one of Buckminster Fuller's famous terms, Spaceship Earth, a world view expressing concern over the use of
S-Bahn Mitteldeutschland in both directions, which ran to Gaschwitz in the south. Later lines were built out to Wurzen in the east and Grünau in the West. On 29 February 1968, the Leipzig Bezirk government decided to build an S-Bahn network. Already at the spring trade fair, the "S-Bahn-style rapid transit" system was demonstrated between the main station and the newly established "Messegelände" (Exhibition Center) stop. By 12 July 1969, the S-Bahn network was expanded to the entire heart shape, in order to cope with traffic volume of the 5th East-German Gymnastics and Sports Festival (). The two branches were named S1