Today there is both the old and a new plaque on the building that testifies to this.
In 1966 it was resited within the park, and new plaques were added at this time.
The new plaques are said to be a precise match in form and typeface for those that were replaced.
A few detoured to look at the new plaque.
The new plaque continues with language to note the revolt and escape of Jews from the camp.
At that time new plaques were mounted inside the tower.
On 14 October 2010 this was replaced with a new commemorative plaque which does not state the number of fatalities.
In 1990, a new plaque replaced the old one.
Since then, the two men have worked closely with other historians to make sure the new plaque does not tell any tall tales.
The ship, which required six months of work, is the same except for a new plaque that honors those who died.