Christmas holiday in Dublin city

Arrived in Ireland, Western Europe, did a City walk in Dublin. The city is not very big and the attractions are very concentrated, basically all in the city center, including Trinity College, St. Peter's Cathedral, Dublin Castle and the River Liffey, etc. The local buildings are very small, and the colors are also very bright and colorful, reflecting the different Celtic culture. There are also many tourists during the Christmas holiday, and it is very lively at night.