Tourists who come to the region usually visit the medieval fortifications such as the tall "Round Tower" (Ger. "Der Runde Turm") finished in 1453, the archiepiscopal (Electorate of Cologne) castle ruins with a well-preserved keep, and the remains of the town wall with several well-restored wall towers and two gates: the "Rhine Gate" (das "Rheintor") built around 1200 as the "Grain Gate" (die "Kornpforte"; last renovation and reconstruction in 1899 after 17th century plans) and the "Coblencian Gate" ("Koblenzer Tor"), originally called the "Castle Gate" ("Burgpforte"); in medieval and Renaissance times up to the 19th century the German word "Pforte" (from Latin "porta") was used for town and church gates instead of "Tor".