Down from the castle is City Hall Square and Ake Brygee Harbour Pier. First of all, we went down to the wharf, where we moored many kinds of boats, full of masts. Walking along the trestle road stretching out into the sea, the breeze is blowing, and the sky at dusk is as beautiful as oil paintings. Looking back at the landmark city hall, the red-brown brick exterior wall is particularly eye-catching. Seagulls flitted around the square, grabbing bread from visitors. Walking behind the city hall, it's a pity that the door closes at this time. Unfortunately, it's impossible to get into the city hall. Looking at the whole building of the city hall, I think it's more spectacular from the back. Down from the back of the city hall is the heart of Oslo, with cathedrals, national theatres and other famous attractions.