Ye Olde Falador

Ye Olde Falador is the name given to the ruins of a city underneath Falador. It is unknown who built or lived there, but according to one of the construction workers, the city was founded over 50,000 years ago: given that Gielinor has only been inhabited for a bit over 12,000 years, this is likely an exaggeration. The ruins are visited during the Underground City quest.