Apart from being a large city with an active cultural life, Stockholm, the capital of Sweden, houses many national cultural institutions. There are two UNESCO World Heritage Sites in the Stockholm County area: the Royal Palace Drottningholm (within Ekerö Municipality) and the Skogskyrkogården (The Woodland Cemetery). Stockholm was the 1998 European City of Culture. Literature Authors connected to Stockholm include the poet and songwriter Carl Michael Bellman (1740–1795), novelist and dramatist August Strindberg (1849–1912), and novelist Hjalmar Söderberg (1869–1941), all of whom made Stockholm part of their works. Other authors with notable heritage in Stockholm were the Nobel Prize laureate Eyvind Johnson (1900–1976) and the popular poet and composer Evert Taube (1890–1976). The novelist Per Anders Fogelström (1917–1998) wrote a popular series of historical novels depicting life in Stockholm from the 19th to the mid-20th century. Architecture The city's oldest section is Gamla stan (Old Town), located on the original small islands of the city's earliest settlements and still featuring the medieval street layout. Some notable buildings of Gamla Stan are the large German Church (Tyska kyrkan) and several mansions and palaces: the Riddarhuset (the House of Nobles), the Bonde Palace, the Tessin Palace and the Oxenstierna Palace. The oldest building in Stockholm is the Riddarholmskyrkan from the late 13th century. After a fire in 1697 when the original medieval castle was destroyed, Stockholm Palace was erected in a baroque style. Storkyrkan Cathedral, the episcopal seat of the Bishop of Stockholm, stands next to the castle. It was founded in the 13th century but is clad in a baroque exterior dating to the 18th century. As early as the 15th century, the city had expanded outside of its original borders. Some pre-industrial, small-scale buildings from this era can still be found in Södermalm. During the 19th century and the age of industrialization Stockholm grew rapidly, with plans and architecture inspired by the large cities of the continent such as Berlin and Vienna. Notable works of this time period include public buildings such as the Royal Swedish Opera and private developments such as the luxury housing developments on Strandvägen. In the 20th century, a nationalistic push spurred a new architectural style inspired by medieval and renaissance ancestry as well as influences of the Jugend / Art Nouveau style. A key landmark of Stockholm, the Stockholm City Hall, was erected 1911–1923 by architect Ragnar Östberg. Other notable works of these times are