Objects

These objects act similar to characters in that they have various uses, be it beneficial or detrimental. The key difference is that objects are not living, whilst characters are.

Object	Usage	Location
Altar of Sunlight	Warriors of Sunlight leader	Lothric Castle
Farron Keep Flame	Unlock the door to the Abyss Watchers	Farron Keep
Filianore's Altar	Spears of the Church leader	The Ringed City
Giant Tree	Grants a Seed of a Giant Tree	Cemetery of Ash
Old Wolf of Farron	Watchdogs of Farron leader	Farron Keep
Purging Monument	Dissolution and Absolution	The Ringed City
Sacrificial Altar	Mound-Makers leader	Undead Settlement
Skeleton Ball	Ball of skeletons that deal damage and roll through out the catacombs	Catacombs of Carthus
Smouldering Ballista	Shoots at the player in Smouldering Lake	Smouldering Lake
Statue of Velka	Dissolution and Absolution	Undead Settlement
The Great Bell	The bell used to summon the Nameless King in Archdragon Peak	Archdragon Peak

Information here is accurate for version 2.15.