MightyGem is right, Hanna Reitsch did it - in the Focke-Achgelis, in the Deutschlandhalle in Munich.
She test-flew before they let the punters in and all was well, but when the audience filled the hall the machine refused to perform. Reitsch figured the extra heat and humidity was the cause and ordered the massive double doors opened, leading to later claims that she had flown through the hall.
The audience, incidentally, had come for an exhibition of German triumphs and were bored rigid by this noisy machine going nowhere.
While we're cranking out useless information, I was amazed (being a Limey) when I found out that in the USA, if you're building a RotorWay, you can go to the factory, get 7.5hr dual training, then even if you have no other flying experience you can go home and hover your own machine until your teeth fall out - as long as you don't go anywhere. I think they may have lifted the minimum to 12 hours since I first found this out, but I pretend I don't know that and tell it the old way, sound better.