UNESCO-recognized (as World Heritage Sites) and important tourist destinations in Romania. Settlement during the Modern Age During the Modern Age, other groups of Germans commenced to arrive and settle parts of contemporary Romania, more specifically in the historical regions of Bukovina, Banat, and once more in Transylvania. As the Kingdom of Hungary became weakened by the Ottoman wars and the Habsburgs were on the rise and continuously expanding their domains eastward, larger groups of Bukovina Germans, Banat Swabians, and Zipser Germans settled the aforementioned Romanian historical regions, mainly for economic and socio-demographic reasons. In Transylvania, other groups of Transylvanian Saxons settled there along with expelled Protestants from Salzkammergut, Austria during Empress Maria Theresa's reign to Sibiu region, Evangelical Lutheran settlers henceforth known as Transylvanian Landlers or, simply, landlers. At the same time, during the 19th century, in the Romanian Old Kingdom (, ), concomitantly with the crowing of King Carol I, a large influx of German settlers came to Muntenia and Oltenia. These Germans are known as Regat Germans. In addition, Germans also settled in Dobruja and this group is known as Dobrujan Germans. At around the same time, in Bessarabia, then part of the Russian Empire, larger numbers of German settlers established colonies in preponderantly in Budjak (), a constituent historical region of Bessarabia situated in its south towards the Danube's end to the Black Sea. These settlers were requested by the then imperial Russian authorities in order to develop the agriculture of the land and boost the region's economy as well as to instill urbanisation. As the Modern Age came to an end, gradually so did the privileged class status of the Saxons in Transylvania which eventually drew them closer to Romania and voting the declaration of union of Transylvania with the Kingdom of Romania in the wake of World War I in 1918. Other groups of Germans from other previously Austrian-ruled Romanian historical regions (and the previously Russian-ruled historical region of Bessarabia) also voted for the union of their respective regions with the Kingdom of Romania from a wide variety of reasons. One of the most important reason was that the Romanian monarchy was also German in origin, being a branch of the House of Hohenzollern from the principality of Hohenzollern-Sigmaringen in Swabia. Recent history (20th century onwards) Between the two World Wars, namely in 1925, 20,000 Swabians from Timiș County were relocated to neighbouring Arad County