The 20 meters high white marble column dominates the main square which is one of the largest squares in Europe.
Wikipedia https://zh.wikipedia.org/wiki/林茨圣三柱
Linz Tourist Office http://www.linz.at/english/Tourism/1164.asp
Address Hauptplatz, 4020 Linz, Austria
Coordinates 48°18'21.055" N 14°17'11.177" E