The main tourist attractions
Stockholm: Nobel Prize City Hall, Warsaw Warship Museum, Durning Han Palace
Copenhagen: Little Mermaid, Jia Shibo beer museum, like Anderson, Rosen Castle
St. Petersburg: hidden Shilu Museum (world's three major museums), Bi Dexia Palace
Gdansk: Old Town Neishengmali main church, the Golden Gate, City Hall
Dublin: Guinness Brewery Museum, St Patrick's Church, Dublin Castle, etc.