Odd question, but my partner and I always try to visit cemetaries when we go to new countries; they tell a lot about history and culture. Little known fact: in Bora Bora, they bury you in the front yard and put up a sort of shrine for you there. There are cemetaries in many front yards!
So is there one in (or near) Reykjavik? Is it interesting? I thought I'd heard of one but was not sure.