SOFIA IS ONE OF THE FEW CITIES FOUNDED DUETO THE MINERAL SPRINGS. THEY WERE WELLKNOWN IN THE REMOTE PAST. NOWADAYS ONTHE CITY TERRITORY THERE ARE OVER 40 MINERALFIELDS WITH A MASSIVE DEPTH AND A GOODCAPACITY FROM 30 TO 90 DEGREES CELSIUS.MORE THAN 90% OF THE SPRINGS BECAMEDESOLATED. THE BUILDINGS AND FACILITIESNEAR THEM ARE ABANDONED OR DESTROYED.THAT IS THE SITUATION ALSO WITH THE EXISTINGCITY MINERAL BATH SITUATED IN A PARK IN ASOFIA RESIDENTIAL DISTRICT. THIS BUILDING WASBUILD FOR THE CITIZENS AND TILL THE BEGINNINGOF THE XX CENTURY THERE WAS THE CITY BATHSITUATED INSIDE. TODAY THE BUILDING ISMISERABLE.II. CONCEPTTHE EXISTING BUILDING – FULLY SYMMETRICAL.THE FACADES ARE CLOSED AND COMPACT. THEINNER SPACES ARE SMALL AND DARK.NEW VOLUME – ONE COMMON VOLUMECREATING CONTACT BETWEEN ALL LEVELS OFTHE BUILDING.BRIGHT AND VERY HIGH SPACES CREATING THETRANSITION BETWEEN INSIDE AND OUTSIDE.III. FUNCTIONTHE AIM OF THE PROJECT IS TO REVIVE THEBUILDING GIVING IT A NEW FUNCTIONCONSIDERING THE CONTEMPORARY WAY OFLIVING. THERE IS A MODERN SPA CENTER ONTHREE FLOORS SET UP INSIDE THE BUILDING. ONTHE FIRST AND THE SECOND FLOOR THERE ARE 3SWIMMING POOLS, JACUZZI, SPA PROCEDURES,PUBLIC SERVICES AND CHANGING ROOMS. ONTHE FOURTH FLOOR THERE IS A FITNESS CENTERAND A YOGA HALL WITH A SEPARATEENTRANCE.IV. CONSTRUCTIONTHE CONSTRUCTION OF THE NEW BUILDING PARTIS MADE FROM WOODEN FRAMES INTEGRATEDWITH LONGITUDINAL BEAMS.