The magic items that the party had found were identified and then the party took a rest. There was never a night phase in the garden, the sky was light all the time. There was no sun either just light from the sky. There was another hour of rain during the rest.
The party did a thorough search of the gazebo. The floor was minutely examined as were the walls and ceiling. The filigree was not of any interest, other than decoration. The table holding the cauldron was unremarkable as was the cauldron. Casia mentioned trying to drop another non magical item in the cauldron to see if anything happened but the party dissuaded her of this approach.
"There are three other buildings, lets search them all once again," Milos suggested.