House Hightower of the Hightower is one of the most important and powerful vassals of House Tyrell (and before them of House Gardener). Their seat is the Hightower in the city of Oldtown within the Reach.
The sigil of House Hightower is a stone white watchtower, with a fire on the top.
Their words are "We Light the Way". They possess a Valyrian steel sword called Vigilance.
The Hightowers are among the oldest and proudest of the Great Houses. They have often preferred trade instead of war, and have also avoided many wars because of their support for the Faith of the Seven. The Hightowers can be legitimately referred to as being either "of Hightower" or "of Oldtown."