The Winter Forest Bonfire is a decorative building which can hold up to a maximum of 3 monsters.
To put a monster in the Winter Forest Bonfire, select the building and then click on Place. From there, select any monster you want from the menu. Alternatively, you can also press and hold on a monster, then drag it onto the building. If a green arrow pointing downwards appears, it means that the building has vacancy and monsters can be dropped in it. If a red arrow pointing downwards appears, it means that the building is full.
Monsters placed here will stop wandering around the player's island. If it is moved, the monsters go with it. Placing monsters in the Surveillance Tower (or any other building) will prevent those monsters from being moved into Storage, or sacrificed as power-up material. They can still be used for arena, guild wars, dungeons, etc.
An Action button is also available, allowing the players to play the short animation of the building and monsters as they please.
The Winter Forest Bonfire is an event building. In order to get it, players had to participate in the corresponding event, Christmas Stockings Event (2016).