Gevorg Marzpetuni Castle, also known as Tapi Fortress, is a 10th-century monastery-fortress complex located near Vedi in Armenia's Ararat region. Built during the first quarter of the 10th century, the fortification features a rectangular defensive perimeter with four corners reinforced by round towers, enclosing a 13th-century vaulted church constructed from hewn white felsite stones. The complex served as both a religious center and military stronghold, with vaulted residential and service buildings lining the southern and eastern walls to accommodate the garrison. Named after the medieval Armenian commander Marzpetuni, the site is historically significant as a 12th-century script center and contains centuries-old khachkars and gravestones reflecting its long spiritual heritage.