Ramba uchiverenga ndima ino - Musi waDecember 1, 1978, nharaunda yaro yenhau yakazivikanwa ndokuiswa muNational Register of Historic Places. Guta reWaterloo rakazivikanwawo nokuda kwebasa raro kupfurikidza neSister Cities International. Musi waOctober 2, 1980, Waterloo yakazivisa ukama hweSister Cities (hunozivikanwa zviri pamutemo muna April 1981) nePorta Westfalica mu (ipapo) West Germany. Kunyanya nokuda kwezvakaitwa naVera Kohlmeier weWaterloo naHelmut Macke wePorta Westfalica, yakavapo somugumisiro wekutsvakurudza kwemadzitateguru, izvo zvakagumisa kuti zvichida zvikamu zviviri kubva muzvitatu zvevanhu veGermany vemuMonroe County vaigona kutsvaga madzitateguru avo kudzokera kunharaunda iyi yekuchamhembe kweGermany.Porta Westfalica pachayo yakavapo muna 1973 sekubatana kwemisha gumi nemashanu muguta revanhu vanopfuura 40 000. Iri paRwizi Weser kuchamhembe kweGermany, Porta Westfalica iri mumupata uri pakati pemakomo makuru maviri. Rwendo rwemapoka makuru kazhinji runoitika makore maviri ari ose, kubatanidza shanyo dzeWaterloo German Band neBläserkreis, nhengo 70 dzechiduku dzePorta. Mipiro yorudo yakaunganidzwawo nokuda kwavapoteri veEast Germany uye vanyajambwa vemafashamo a1993
. Kubatana uku, uko kunonzi Portaloo, kubvira ipapo kwakabatsira mamwe matunhu ari munharaunda iyi kuti vagadzire zvirongwa zvavo zveSister Cities, kusanganisira Columbia/Gedern, Belleville/Paderborn, uye Millstadt/Groß-Bieberau. "Portaloo" yakakudzwa nemigove minomwe inodikanwa yeReaders Digest nokuda kwepurogiramu yayo yeGuta reHama. Gore negore muzhizha guta rino rinoita "Porta Westfalica Fest" yegore negore kana kuti "PortaFest" mukukudza guta raro rehanzvadzi.