life in Stockholm from the mid-18th to the mid-20th century. Astrid Lindgren lived and worked in Stockholm. Her work Karlson on the Roof is situated close to where she lived in Vasastan, near Vasaparken. 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 Nobility), 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 1730-40s. 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. Norrmalm, now the central part of the shopping district of Stockholm, was originally a separate city but was incorporated in Stockholm (now Old Town) during the early 17th century. Stockholm has had a tradition of applying for building permits in order to erect a building from the early 18th century, with the oldest building permit from 1713. The building permit application tradition is still ongoing which means you can follow a newly built house from 2022 and see all previous buildings all the way back to 1713. Several of the building permits from the early 18th century was renovations and add-ons to older buildings from the 17th century. Today the Stockholm City Building committee is in charge of the building permit process and their old archive, from 1713-1978, is maintained by Stockholm City Archives. All drawings of old buildings from 1713-1874 are digitized and available through the website of Stockholms City Archives. At the age of industrialization and at the end of the 19th century and 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