There is a secret society inside the fountain in the Town Square. You get the code from the creepy girl in the Mill.
There's a lock under the hay in Astro Knights
There is no well at the mill. There is, however, a rope, and a secret society member, and a hidden hovercraft.
There is no well. There is a village fountain, beneath which is the meeting place for the secret society of technological followers of Mordred.
The key from the secret society opens Mordred's secret underground lab, under the two hay bales near the mill farm.
In the fountain. you have to find the password first.
go to the secret door
The secret room between the hay bales!
The robot owl is in Mordred's secret underground lab, under the hay bales on the farm. You need the key from the secret society that meets under the village fountain.
The Cosmic Symbols are the password for the secret society. Use them to open the secret opening on the village fountain. Go to the fountain in the village. On the plaque, press the three symbols and the Sun, and it will open a secret door.
The small key in Astro Knights Island is for Mordred's secret hideout. When you come to that wind mill area, move the hay bales apart and use the key on that.
Go to the library and click on Mc. It will reveal a secret passageway.
No, because you need the three knights to go with you. (see related question)