The Tallest Tower is a location in the 2004 film based loosely on the Earthsea stories. 

It is the watchpoint of Cob's castle, and the place of the The First Duel Of Warhort. It has seen many significant events and is constructed out of obsidian and dragon bones.It is around 50 metres high and is barred access by a steep wall. There is a narrrow staircase passage which leads to it, which is guarded closely by Hare and his guards. It is also the place where Cob practises his spells.