The city has no definite centre and pockets of attractions are dotted all over. The densest array of sights lies to the east of the Brandenburg Gate, on either side of Unter den Linden. West Berlin\'s centre has less to offer. Nevertheless visitors should take a look at the broken shard of a church, the Kaiser Wilhelm Gedächtniskirche, which serves as a brutal reminder of World War II. The nearby Zoo and Aquarium also provide a happy distraction.