keep ", ▁" old ▁city " ▁and ▁" watch t ower " ▁or ▁" block house ". ▁ ▁Keep ▁ ▁In ▁Mor oc co ▁and ▁in ▁I ber ia , ▁the ▁Arab ic ▁word ▁form ▁of ▁k as bah ▁frequently ▁refers ▁to ▁multiple ▁buildings ▁in ▁a ▁keep , ▁a ▁cit adel , ▁or ▁several ▁structures ▁behind ▁a ▁def ensive ▁wall . ▁The ▁Spanish ▁word ▁ ▁is ▁a ▁cogn ate ▁naming ▁the ▁equivalent ▁building ▁in ▁And alus ia ▁or ▁Mo or ish ▁Spain . ▁In ▁Portuguese , ▁it ▁evol ved ▁into ▁the ▁word ▁. ▁In ▁Catal an , ▁the ▁evolution ▁resulted ▁in ▁. ▁A ▁k as bah ▁was ▁a ▁place ▁for ▁the ▁local ▁leader ▁to ▁live ▁and ▁a ▁defense ▁when ▁a ▁city ▁was ▁under ▁attack . ▁A ▁k as bah ▁has ▁high ▁walls , ▁usually ▁without ▁windows . ▁Sometimes , ▁like ▁in ▁Tang iers , ▁they ▁were ▁built ▁on ▁hill top s ▁so ▁that ▁they ▁could ▁be ▁more ▁easily ▁def ended . ▁Some ▁were ▁placed ▁near ▁the ▁entrance ▁to ▁har b ors . ▁Having ▁a ▁k as bah ▁built ▁was ▁a ▁sign ▁of ▁wealth ▁of ▁some ▁families ▁in ▁the ▁city . ▁When ▁colon ization ▁started ▁in ▁ 1 8 3 0 , ▁in ▁northern ▁Al ger ia , ▁there ▁were ▁a ▁number ▁of ▁k as bah s ▁that ▁last ed ▁for ▁more ▁than ▁ 1 0 0 ▁years . ▁ ▁Old ▁city ▁The ▁word ▁k as bah ▁may ▁also ▁be ▁used ▁to ▁describe ▁the ▁old ▁part ▁of ▁a ▁city , ▁in ▁which ▁case ▁it