Vienna's major development from a small Baroque residential city enclosed by fortifications to a modern European metropolis began after 1840. The most important infrastructural projects were the regulation of the Danube, the construction of the Ringstrasse zone, the building of the Vienna High Spring Water Pipeline, the erection of the buildings for the Vienna World Exhibition in 1873 and the construction of a cemetery open to all, the Vienna Central Cemetery. The planning atlas summarizes regulatory plans, some of which were published and some of which come from private collections. Together with the memoirs of the city planner Heinrich Goldemund from 1943, excerpts of which are