LTAtkuriant Valdovų rūmus 2004 m. buvo tęsiami jų V korpuso ir jo prieigų tyrimai. Nors išlikę V korpuso rūsiai buvo tirti dar 1994-1995 m., pradėjus statybos darbus tyrimai buvo pratęsti. Didesnės ar mažesnės apimties tyrimai vyko apie 2000 m2 plote, jų metu rasta apie 2600 radinių, tarp jų apie 50 monetų bei plombų [p. 133].
ENIn 2004 investigations of the Western Block of the Sovereigns’ Palace and its vicinity was continued. The cellars themselves were investigated in 1994-1995; nevertheless many sites required further investigation. They covered an area of about 2000 m2. During the investigation about 2600 finds were collected, among them about 50 coins and seal tags. The cellars I and H were investigated, research of the cellars X and S was finished, and the top of the long cellar vault (Y) was excavated. The cellars were built in different periods varying from the late 15th to the early 17th century.