Spandau Citadel

Spandau Citadel, one of the most famous touristic attractions of the far Western Berlin, is considered one of the most preserved Renaissance military structure. It was built at the end of the 16th century, as a medieval fort aimed to preserve the town of Spandau, now part of the capital city of Germany.
You can easily reach Spandau by S-Bahn or UBahn - U7 line. It is a quiet area, with lots of small shops and restaurants.