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Kölner Dom

Kölner Dom

Kölner Dom

Kölner Dom

Kölner Dom

Kölner Dom

Kölner Dom

Kölner Dom

Heinzelmännchen

EL-DE Haus

EL-DE Haus : Apparently, they used to put so many people in a cell at once that they wouldn't be able to sit or lay down, simply stand. They also found nearly 1,800 writings on the walls throughout the prison of the prisoners who were kept there.