I have to describe an Abbey:
An abbey is a monastery under an abbot orders.
Nowadays, it is used to say mass, there are different types of mass like: requiem mass or midnight mass, for example. Basically this is their essential function.
It is made of marble Purbeck, and lots of huge stone blocks, coloured glass for windows and wood for the doors.
The thing is that it has cross shape, so it is looks like a cross.