After a major blaze in 1405, the original wooden buildings were gradually replaced by half-timbered houses and later the sandstone buildings that came to be characteristic for the Old Town. Despite the waves of pestilence that hit Europe in the 14th century, the city continued to grow mainly due to immigration from the surrounding countryside.
Modern history
Bern was occupied by French troops in 1798 during the French Revolutionary Wars, when it was stripped of parts of its territories. It regained the Bernese Oberland in 1802, and following the Congress of Vienna of 1814 newly acquired the Bernese Jura, once again becoming the largest canton of the confederacy as it stood during the Restoration, and further until the secession of the canton of Jura in 1979. In 1848 Bern was made the Federal City (seat of the Federal Assembly) of the new Swiss federal state.
A number of congresses of the socialist First and Second Internationals were held in Bern, particularly during World War I when Switzerland was neutral; see Bern International.
The city's population rose from about 5,000 in the 15th century to about 12,000 by 1800 and to above 60,000 by 1900, passing the 100,000 mark during the 1920s. Population peaked during the 1960s at 165,000, and has since decreased slightly, to below 130,000 by 2000. As of 31 December 2009, the resident population was at 130,289 of which 101,627 were Swiss citizens and 28,662 (22%) resident foreigners. Another estimated 350,000 people live in the immediate urban agglomeration
