Verschlossen

I'm happy you like them :-)
Thanks and cheers, Dj!

In this specific case, I didn't need to google. I learnt some German over 50 years ago in the university with Herr Siegfried Zug, a maestro of choral groups who lived in Portugal. My vocabulary is very short. When I visited Germany in 1973, all alone, I had to speak and listen German all the time and sometimes my thoughts were in German. A lot of vocabulary was gradually forgotten. I still keep in mind most about declensions and syntax rules. I have to make previous reviews of vocabulary before travelling to a German speaking destination. I only ask a question in German if I foresee I can understand the answer...

Well, that's interesting (same word but interesting in a different way compared to the castle you had visited). I'm sorry to say that I don't know Siegfried Zug, but then again I already spoke German fluently in 1973 ;-))
Well, if you only ask a question in German if you can foresee that you'll understand the answer...then you don't have to ask at all ;-))) You may foresee the complete answer in that case.

I know some Portuguese that I learned during my vacation in Brazil (ok, so you may not consider it Portuguese, lol), but it wasn't too difficult to understand (at least reading it) because I studied Latin, French and Spanish before :-)