User blog comment:Musa666/Letting off a bit of steam/@comment-53539-20140605094817/@comment-30602727-20140605133802

If they were in a museum, you're not allowed to take pictures of whatever is there unless you have special permissions. Some parts of museums have exceptions

Especially in an art museum, you're not allowed to take pictures. But it sounds like you were in a sort of history museum. Same rules apply, but they're somewhat less strict. Reason why is because it's not likely that you're going to sell your photo off or rip off the same idea as people can do to art museams