THE ARCHITECTURAL OFFICE P. TZONOS, G. HOIPEL, X. HOIPEL OE. WAS ESTABLISHED IN 1966 AND WAS ACTIVE UNTIL 2009. THE OPERATION OF THE OFFICE WAS CONTINUED BY P. TZONOS WHO ESTABLISHED P. TZONOS & ASSOCIATES S.A. IN 2009 WHICH LATER, HAS EVOLVED INTO MEAMUSE S.A.