The gold coin in the fountain will pay your admission to the Mordred museum. But you cannot access the secret entrance behind the plaque until you have the Cosmic Symbols password card.
You get the Cosmic Symbols card from the girl upstairs in the Mill. You will need the Secret Message from the Princess (in the maid's room, castle first floor, left side).
Once you have the card, go to the plaque and press the three symbols, then the Sun, and the doorway will open.
You can't get in through the library again. You have to come in through the tunnel that Mordred dug when he escaped (see the journal). The tunnel leads to his secret underground lab. To reach the cell by the back way, you do this :
Merlin will retrieve the fuel rod for you if you click him and then the rod.
(see related question)
There is a hidden stairway to the dungeon in the castle library, and a hidden opening under the fountain.
It is in the middle section under the rocket, and will show up as a shiny glint in the water.
There is no wishing well on Astro Knights island. There are :The spaceship fountain - there is a gold coin in the water, and if you take the secret message from the castle to the mill, the girl there will give you the password to open the secret passage under the fountain.The underground lab - Mordred's secret lab is hidden under the two bales of hay on the farm, and you will need the key from the secret room under the fountain.
There is no wishing well on Astro Knights island. There are :The spaceship fountain - there is a gold coin in the water, and if you take the secret message from the castle to the mill, the girl there will give you the password to open the secret passage under the fountain.The underground lab - Mordred's secret lab is hidden under the two bales of hay on the farm, and you will need the key from the secret room under the fountain.
The Cosmic Symbols password card lets you enter the room under the fountain in the village. Pressing the three symbols (and the sun) on the fountain plaque will open the secret door.
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.
half moon.... planet with rings....star....sun
i dont even know! but i do know this: that the gold coin is in the fountain and that the library card is under the bed in the museum. and you MUST give the gold coin to the guy before entering.
No, she is not bald. She just has her hair in a bun under her crown.
under the library, you click on the McM label and stairs appear
You can enter the fountain room, and Mordred's laboratory. Take the message from the Maid's room to the second floor of the Mill, where you get the Cosmic Symbols password card. Then you can go under the plaque on the fountain to get the key to the buried door under the hay bales. (see related question)
On the second floor of the Mill, the Goth girl will give you the Cosmic Symbols password card if you have the Princess's secret message from the Maid's room. On the plaque on the fountain, press the three symbols and the Sun and you can enter the secret room under the fountain.