ArchitectHerman Friedrich MertensDutch architect (1885-1960), 1885–1960Photograph of one of their buildings · Wikifrits · Public domain · Wikimedia Commons4 buildingsKingdom of the NetherlandsBuildingsHaka-gebouwRotterdam, NetherlandsRotterdamsche BankGouda, NetherlandsWilhelminakerkUtrecht, Netherlandswater towerPekela, Netherlands