Aarau is a city in Switzerland, located in the canton of Aargau. It serves as the capital of the canton and is known for its beautiful old town, featuring charming streets and historical buildings. The city is situated along the banks of the Aare River, which adds to its scenic beauty. The population of Aarau is around 20,000 residents, making it a small yet vibrant community. The city is well-connected by public transport, including trains that link it to major cities like Zurich and Bern. Aarau also hosts various cultural events and festivals throughout the year, enriching its local culture.