I don't understand what the Prüfungstempel is in this sentence:
Sarastro befiehlt, dass Tamino und Papageno in den Prüfungstempel geführt werden, und bestraft Monostatos.
I have searched the Google and find that it may mean "house of trials", but it seems strange to me. Literally Prüfung means test and stempel means stamp, and hence it can be translated to test stamp. But what is test stamp and how can Tamino and Papageno be led into a test stamp?