Google translation : The submarine U -434 - the submarine museum . It is one of the last submarines of the tango world class . There were probably 20 of them , 3 of them were part of a special series , including the U- 434th 1895 - 1896 the fish auction hall was built. The hall like a basilica built , it is a Stahlträgerbau which was lined with bricks. Since 1984, this listed building .