An increasingly important in urban theme is the recompression. The population is growing in Vienna, according to forecasts by the year 2034 from the current 1.8 million to nearly 2.1 million at. To cope with this enormous growth in demand, a particularly efficient urban development. Especially the densification plays a major role and offers the greatest potential. For this reason, the historical development of recompression for future decisive. What can be learned from the history of recompression? Does it provide new solutions for today's recompression? The European city is a result of continuous compression and permanent changes. There are old and new forms of compression compared and the question of an -ideal recompression" are provided.