The Royal Estate of Tatoi is situated in a densely wooded southeast-facing slope of Mount Parnitha.
King George I started buying property in this area in 1871 or 1872, with the intention to build there, his summer residence. The construction of the main building was finished in 1888 and until the end of the 19th century the estate had over 15 auxiliary buildings. Initially it was used as a summer house but after 1948 and until 1967 the Greek Royal Family used it as permanent residence.
Today the estate is abandoned, looted and most of the buildings are dilapidated. In June 2007 the Greek governement decided to turn the former palace and grounds into a museum, but until today very little has been done.