Fez is a huge open world game with many many different areas very few of which are named or numbered in the game.
Fez locked doors.
These represent the three sizes of cube zones seen on the map.
Go through the door that.
Every door i have gone through has brought me to a different door in the same room but the world map shows that there is an exit to another room.
8 cubes you can then enter the door from the area just outside the starting village where there were originally 4 locked cube doors.
Fez is a confusing game to get through and that means making a guide for it is also slightly tricky.
To access everything in the lighthouse area you will need to have lowered the water and acquired the first person ability.
I found a room with about 50 doors arranged in four rows of four on each side of the cube but with some removed blocked.
Looking for more help with fez.
You can still solve the puzzle without having the first person glasses.