After completing the swim, I headed to a guided tour of City Hall. It is the place of the Nobel prize banquet, and the guide explained how it is possible to fit in so many people in such a small hall.The City Hall was built to give a permanent meeting place for the city council.After visiting the city hall, I had lunch then headed to Vasa museum. The ship Vasa was a warship built to show the power of empire centuries ago but sank only a very short distance after being launched because it wasn’t seaworthy. It was successfully preserved despite covered in mud for centuries on the sea bed.30th April is a traditional festival called Valborg to celebrate the arrival of spring. It is celebrated with songs and bonfire. Students are especially active on that day. I visited Skansen for the celebration, and met a group of people from Hong Kong doing working holiday here, despite knowing no Swedish.