The town of Oslo was founded in the year 1000, but even in pre-historic time there was a settlement where Oslo is standing today. The town was rebuilt after the devastating fire in 1624. At that time, Norway was a part of Denmark, and the Danish king Christian IV renamed the town Kristiania. In 1814, a union between Sweden and Norway was established, and Kristiania became the capital of Norway.
In 1905, the union was dissolved and Norway became an independent nation. In 1925 the town was renamed Oslo again. The population grew rapidly at the end of the 19th century. Today there are 500,000 inhabitants in Oslo. The main street and center of Oslo is called Karl Johan.
Both the Royal Palace and Stortinget, the Norwegian Parliament, are situated on Karl Johan. The large Frogner Park and the expensive Town Hall, which was built for Oslo's 500th anniversary in 1940, are other places worth seeing.