Darm Tower, also known as Dahm Tower in Legacy of Ys, is a location in Esteria. It was built by Dalles and his army of demons to bring down Ys.
The tower is very tall, and consists of twenty-five huge floors. It can be seen from most places in Esteria, including from the sea.
Darm Tower first appeared in Ys I: Ancient Ys Vanished as the setting of the second half of the game.
The entirety of Ys Origin takes place here.