Its because they are all stained glass, and look alike. :)
It is a fictional Cathedral based on Salisbury Cathedral as is shown in the final shot. http://www.salisburycathedral.org.uk/pillars.salisbury.php
Following are the five pillers of islam:-1. KALMA (la ilaha illalaho muhammad-ur-rasoolullah)2. NAMAZ (PRAYERS)3. ROZA (fasting)4. ZAKAT (TO GIVE MONEY TO POOR PEOPLES)4. HAJJ
You have a strong tie with God (Allah), the Creator.You have a strong justification to be accepted in God Paradise, with God mercy and will.
yes they are shaped like a cross from above.