In 1814 the former provincial town of Christiania became the capital of the independent Kingdom of Norway, in a personal union with Sweden. Several state institutions were established and the city's role as a capital initiated a period of rapidly increasing population. The government of this new state needed buildings for its expanding administration and institutions. Several important buildings were erected – The Bank of Norway (1828), the Royal Palace (1848), and the Storting (1866). Large areas of the surrounding Aker municipality were incorporated in 1839, 1859 an 1878. The 1859 expansion included Grünerløkka, Grønland and Oslo. At that time the area called ''Oslo'' (now ''Gamlebyen'' or Old Town) was a village or suburb outside the city borders east of Aker river. The population increased from approximately 10 000 in 1814 to 230 000 in 1900. Christiania expanded its industry from 1840, most importantly around Akerselva.  There was a spectacular building boom during the last decades of the 19th century, with many new apartment buildings and renewal of the city center, but the boom collapsed in 1899.