[Always Open]: Secret Chambers of Secrets

(This is for my Red Hand Badge)

We have knowledge of Salazar's Chamber of Secrets, but what if he wasn't the only founder to create such a magical hidden place at Hogwarts? What would have stopped Helga, Rowena and Godric from creating their own secret chambers?

For this challenge you need to come up with a name and describe a 'Chamber of Secrets' for one or all the other three founders. Such places must reflect the personality and values of their founder. Be thorough, no less than 300 words per Chamber will be accepted.

Points: 250 per chamber (which makes for a possible total of 750 HP).

Godrics Chamber of Secrets
I think that if Godric Gryiffindor created a secret chamber in the school, he would have created a chamber that was filled with training items, sort of like the room of requirement when the DA were using it. This fits Godric because some Gryffindor traits are bravery and daring, and he would've wanted his students to train, because when you're really good at something you feel courageous and brave and daring and all those other Gryffindor traits.