The history of the Berlin Wall is very interesting.

This mural depicts the history of ancient times.

He likes climbing rock faces.

He suddenly did a 'kabe-don' and surprised me.

He hung a picture on the northern wall.

He hung a picture on the west wall.

He hung a picture on the eastern wall.

This building is surrounded by firewalls.

I thought his plan was perfect, but in fact there were some flaws.

He said there's no such thing as a perfect human.