During the 15th century, the Tribes of Galway seized power from the De Burgos and forced them out of the city. For awhile afterwards, the Hall was transformed into an iron workshop, before being abandoned and subsequently falling into ruin.
Over the following centuries,, the site was covered over and built upon. When a new public works project began in 1997, the remains of the Hall of the Red Earl were rediscovered, halting the project while archeological excavations took over.
As the oldest ruins of Galway, at that time (later to be supplanted by the ruins of a slightly older building around the corner, under a woolen sweater shop), this public works project had to be redesigned so the Hall could be preserved. Today, this Hall of the Red Earl is one of Galway’s top tourist attractions.