This is perhaps one of the most interesting buildings I've ever come across- and I first saw these when a colleague of mine returned from a trip to Africa. This church was built in the 12th Century (so there's a bit of Templar rumor in there) as a testament to the faith of the native Ethiopians; Lalibela is the Ethiopian king who commissioned this structure and it was built from the ground DOWN. You'll see.
This is at ground level...as you can see, the church extends BELOW, not above as most buildings do.
This is a shot from the temple entrance, below 'ground level'.
Here is a shot from across the chasm.
Pretty cool, huh?