Aarau was founded by the Counts of Kyburg in approximately 1248 and expanded under the Habsburgs in the 14th century. In 1415, Aarau became subordinate of Bern, and in 1798 it became the capital of the Helvetic Republic for 6 months. Today, it has about 21,000 inhabitants and has been the cantonal capital since the founding of the canton Aargau in 1803. In the well-preserved streets of the old town are many houses with richly-painted eaves, which is why Aarau is also called the "Town of Beautiful Gables". In 2014, the city was awarded the Wakker Prize by the Swiss Heritage Society. Located on the Aare, the landmark of the town is the Upper Gate Tower, built in the 13th century and expanded later. The tower clock built in 1532 was so well-constructed that it has needed repair only twice so far. The museum of the city is located in another medieval tower built from boulders and pebbles from the Aare and later expanded. Its collection includes approximately 60,000 artifacts that bear reference to the city. In addition, several thematic exhibitions per year are shown. The museum conducts several thematic exhibitions each year. Another noteworthy city treasure is the Aargauer Kunsthaus (to some people, considered the National Gallery of Switzerland). The building (expanded by architects Herzog & de Meuron and inaugurated in 2003) contains one of the finest and most comprehensive public collections of Swiss art from the late 18th century to the present day. The cultural city of Aarau also has a lot to offer musically. The city hosts the folk music festival, the Festival "Musig i de Altstadt", jazz and classical concerts, including appearances of the Argovia Philharmonic Orchestra in the simple, solemn city church built in the 15th century with white plastered facades. Visitors who want to stay overnight in town enjoy a wide range of hotels, bed & breakfasts, apartments, rooms and private accommodations.