#1 � Bridge of Sacrifice
#2 � Castle Morne Rampart
#3 � Beside the Crater-Pocked Glade
#4 � Impaler's Catacombs
#5 � Castle Morne Lift
#6 � Behind the Castle
#7 � Beside the Rampart Gaol
#8 � Morne Moangrave
#9 � South of the Lookout Tower
#10 � Ailing Village Outskirts
#11 � Earthbore Cave
#12 � Morne Tunnel
#13 � Church of Pilgrimage
#14 � Tombsward Catacombs
#15 � Tombsward
#16 � Tombsward Cave
#17 � Fourth Church of Marika
#18 � Isolated Merchant's Shack
Among other things, Sites of Grace serve as checkpoints. If you die, you will respawn at the Site of Grace with which you have most recently interacted with.
There are as many as 18 Sites of Grace to be discovered while exploring the Weeping Peninsula region.
Keep in mind that some of the Sites of Grace in the Weeping Peninsula are on the lower levels of the area, while others are on the higher levels. It's recommended to ride your mount while exploring, as you might find it difficult to reach certain locations without the double jump.