Mezue ahịrịokwu na-esonụ: Na December 1, 1978, a ghọtara ógbè akụkọ ihe mere eme ya ma tinye ya n'Ụlọ Ndebanye aha Mba nke Ebe Ndị Akụkọ Mere Eme. A makwaara Obodo Waterloo maka ọrụ ya site n'aka Sister Cities International. N'abalị abụọ n'ọnwa Ọktoba n'afọ 1980, Waterloo kwupụtara mmekọrịta obodo nwanne (nke a mara ọkwa n'ọnwa Eprel n'afọ 1981) na Porta Westfalica na (mgbe ahụ) West Germany. N'ihi mbọ nke Vera Kohlmeier nke Waterloo na Helmut Macke nke Porta Westfalica, ọ bịara dị ka nsonaazụ nke ọmụmụ ọmụmụ, nke kwubiri na ikekwe ụzọ abụọ n'ụzọ atọ nke ndị German nke Monroe County nwere ike ịchọta nna nna ha na mpaghara a nke ugwu Germany.Porta Westfalica n'onwe ya pụtara na 1973 dị ka mkpokọta nke obodo 15 n'ime obodo nke karịrị 40,000. Ebe ọ dị n'Osimiri Weser n'ebe ugwu Germany, Porta Westfalica dị na ndagwurugwu dị n'agbata nnukwu ugwu abụọ. Njem site n'ìgwè buru ibu na-emekarị kwa afọ abụọ, gụnyere nleta nke Waterloo German Band na Bläserkreis, ndị ntorobịa ntorobịa 70 nke Porta. A chịkọtakwara onyinye ọrụ ebere maka ndị gbara ọsọ ndụ East German na ndị ahụ a tara ahụhụ na 1993
iju mmiri. Mmekọrịta a, nke a na-akpọ Portaloo, enyerela obodo ndị ọzọ nọ na mpaghara ahụ aka ịmalite mmemme obodo nwanne ha, gụnyere Columbia / Gedern, Belleville / Paderborn, na Millstadt / Gros-Bieberau. E nyela "Portaloo" ihe nrite asaa nke ndị na-agụ akwụkwọ na-achọsi ike maka usoro ihe omume obodo nwanne na nwanne. N'oge okpomọkụ ọ bụla obodo a na-eme ya kwa afọ "Porta Westfalica Fest" ma ọ bụ "PortaFest" na nsọpụrụ nke obodo nwanne ya.