Wǒmen zài Gēběnhāgēn cānguān le měirényú diāoxiàng.
We visited the Little Mermaid statue in Copenhagen.
Tips
memory
The four characters are purely phonetic: 哥本哈根 sounds like 'Ko-pen-ha-gen', a close match to the Danish 'København'. The 哥 (gē, older brother) and 根 (gēn, root) are just phonetic carriers.