Poleitai diamperes kai poly photeino diamerisma tetartoy orophoy, 99 t.m. se kentriko semeio toy Palaioy PHaleroy. Prokeitai gia ena exairetika eyrychoro diamerisma, prosopseos kai se poly pronomiake topothesia. Diathetei 2 ypnodomatia, 1 mpanio, koyzina, kai grapheio, trapezaria kai saloni se enan megalo eniaio choro. Akoma, yparchei exairetika eyrychore kai photeine beranta perimetrika se ole ten epiphaneia toy diamerismatos poy prospherei yperoche thea kai apleto phos ston choro. Se olo ton eniaio choro toy kathistikoy yparchei xylino patoma exairetikes poiotetas. Sta ypnodomatia yparchoyn megales ntoylapes poy prospheroyn poly apothekeytiko choro. To diamerisma diathetei aytonome thermanse me physiko aerio, monades klimatismoy kai koyphomata aloyminioy katatassontas to se ypsele energeiake kategoria. Diathetei porta asphaleias. Sten time perilambanetai kai these stathmeyses. E topothesia toy diamerismatos syndyazei ta ophele tes poles, kathos brisketai konta se emporika katastemata kai sygkoinonia, alla kai tes thalassas poy einai poly eykola prosbasime akoma kai me ta podia (ligotero apo 10 lepta).