DLC - how to start? (Dark Souls 2)

well see
there are three DLS and each has its own entrance
in the misty tower can be accessed from the hall where they lit the bonfire after defeating the old iron king
in the flooded after defeating so rotting in the hall where they lit the fire
and last - the snow tower - the entrance to the Shrine of winter
all the entrances look like a bowl of water and above it intertwined snakes

Temelkov
thank you one already figured out in the temple of winter. but others not yet, that I do not remember after where the iron king bonfire was, Yes okay I understand thank you