t Greenwich on the southern bank of the River Thames in London Humphrey, Duke of Gloucester constructed new buildings on the site of an old medieval abbey starting in 1433. He built a tower as a lookout to watch out for invasion fleets coming up the Thames. The tower's location is now occupied by the Greenwich Royal Observatory and the palace is now the site of the Royal Hospital. Originally the building was called Greenwich Castle or the Manor of Pleazaunce. The palace featured heavily during the Tudor period and King Henry VIII was born there in 1491.













