PlumM to WikipediaEnglish • 1 month agoCatenaryen.wikipedia.orgexternal-linkmessage-square5arrow-up154arrow-down11
arrow-up153arrow-down1external-linkCatenaryen.wikipedia.orgPlumM to WikipediaEnglish • 1 month agomessage-square5
Gateway Arch, St. Louis. Inverted catenary.