▁county ▁() ▁of ▁Hung ary . ▁ ▁Description ▁N ó gr ád ▁county ▁lies ▁in ▁northern ▁Hung ary . ▁It ▁shares ▁borders ▁with ▁Slov ak ia ▁and ▁the ▁Hung arian ▁count ies ▁P est , ▁He ves ▁and ▁B ors od - A ba ú j - Z empl én . ▁The ▁capital ▁of ▁N ó gr ád ▁county ▁is ▁Sal g ó tar ján . ▁Its ▁area ▁is ▁ 2 , 5 4 4   km ². ▁It ▁is ▁the ▁smallest ▁county ▁by ▁population ▁and ▁the ▁second ▁smallest ▁by ▁area ▁( after ▁Kom á rom - E sz ter gom ). ▁ ▁N ó gr ád ▁is ▁famous ▁for ▁its ▁historic ▁architecture ▁of ▁ancient ▁Goth ic ▁churches ▁and ▁stone ▁cast les ▁dated ▁to ▁the ▁ 1 3 th ▁century . ▁Other ▁historic ▁land mark ▁includes ▁the ▁bar o que ▁buildings ▁constructed ▁in ▁the ▁ 1 8 th ▁century ▁and ▁the ▁V ay , ▁Tele ki . ▁Much ▁of ▁the ▁northern ▁border ▁of ▁the ▁county ▁is ▁formed ▁by ▁the ▁river ▁I poly . ▁The ▁mountain ▁ranges ▁B ör zs ö ny , ▁C ser h át ▁and ▁M át ra ▁lie ▁partly ▁in ▁the ▁county . ▁ ▁Due ▁to ▁the ▁mountains , ▁the ▁county ▁is ▁character ised ▁by ▁small ▁villages ▁nest led ▁in ▁the ▁valle ys . ▁The ▁two ▁largest ▁settlement s ▁are ▁Bal ass agy arm at , ▁the ▁former ▁county ▁seat , ▁and ▁Sal g ó tar ján , ▁which ▁has ▁become ▁a ▁center ▁of ▁industry ▁in ▁the ▁early ▁ 2