not just a crescent, but a crescent with a cluster where the star would be, plus a "tower of voices" at the entrance = minaret.
it is a BIG FAT RAT, shibumi
Yep, you're right. The tower of voices is an avant garde minaret and the "star" is in perfect position relative to the crescent.
The whole deal is essentially a shrine that celebrates the work of Allah the moon god.