Big congregation, arena-like seating? Check. Incredible 300-metre-plus gothic tower? No. I saw a drawing somewhere online that just captured my imagination - a

Big congregation, arena-like seating? Check. Incredible 300-metre-plus gothic tower? No. I saw a drawing somewhere online that just captured my imagination - a cathedral-like building on a scale absolutely dwarfing regular buildings. I'm 90% sure it was actually Warhammer 40,000 concept art.