I think I'm almost finish Fez, but there's still some puzzle I couldn't figure out

First, the room with some candles 

![][1]

There's a symbol on the ground (only seem by first person view), and I got a half treasure map seems related to the symbol. But I tried for a long time and nothing happens. How could I solve it or where could I got another half of the treasure map?

Second, the room with strange boxes 

![][2]
 
I have nothing idea about this. What does the symbol mean?

And the room with a huge clock. I think I just have to wait until something appears, but how long should I wait?

 [1]: http://i.imgur.com/YdZkj.jpg 
 [2]: http://i.imgur.com/S6Ydr.jpg