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On the sign:
THE OLD UNIVERSITY HOUSE OF KLEANTHIS
HERE IS THE SEAT OF THE FIRST INIVERSITY OF THE INDEPENDENT GREEK STATE FROM 1837-1841
THIS BUILDING WAS FORMERLY THE HOME OF THE ARCHITECT STAMATIOS KLEANTHIS WHO REMODELLED THE ALREADY EXISTING STRUCTURE
The house, also called the Saubert House, formerly housed the first university of Greece (Othonios University). The architect Stamatios Kaliantis lived in the building, who both renovated the building and designed important buildings in Athens.