Berlin is the capital city of Germany and it has 3.4 million inhabitants. You can visit the Berlin Wall, the Branderburg Gate, which is 69 metres high, the Kaiser Wilhem Memorial which is like a huge church, the Victory Colum etc. Berlin has more than 100 museums, so you can algo go and visit some of them.
One tenth of the population are foreigners. The meaning of the word 'Berlin' is wetland, beacause of the nature of the land in which the city is constructed.