Odense Harbour to Odense Fjord was built between 1796 and 1806 to facilitate the growth of Odense as a port city, radically increasing its level of trade and population. Founded in 1796, Odense Teater is the first provincial theatre in Denmark and the country's second oldest. Odense Central Library was established in 1924 and removed to Odense station in 1995. The Odense Music Library contains Denmark's largest collection of phonograms. From the 1840s, the city enjoyed a period of rapid expansion beyond its traditional boundaries, becoming Denmark's second largest city. The city gates were demolished in 1851 and soon afterwards development
Odense early 20th century. The 1901 census recorded 40,138 people, growing to 47,224 in 1911, 61,969 in 1921 and 87,090 in 1935. During the Second World War, the population passed the 100,000 mark, reaching 103,107 in 1945. It continued to grow in the post war years, with 120,570 recorded in 1955 and 133,384 in 1965; the city reached a population of 139,490 people in 1970, a time when it was developing as a university city after Odense University was established in 1966. Residents began to move out of the centre into the suburban areas which were included in Odense Municipality after