This volume is the first to compare the urban development of four Armenian colonies in Transylvania (Romania): Gherla, Dumbrăveni, Gheorgheni and Frumoasa from the 18th until the first decades of the 20th century. Among them, Gherla is the most frequently cited example in connection with municipal construction. This “Armenian metropolis” was built in the 18th century “on the site of a goose grazing field”, based on engineering plans. We cannot talk about a single “Transylvanian Armenian style” in architecture or streetscape because of the high degree of formal differences between the various settlements. But despite formal differences, these townscapes bear common characteristics as well. Hence, the methodological starting point of the work was the integration model of the migrant ethnic minorities.