' s ▁former ▁res er voir , ▁which ▁was ▁in ▁use ▁until ▁ 1 8 5 2 , ▁after ▁which ▁it ▁was ▁replaced ▁by ▁the ▁Mc T av ish ▁res er voir ▁following ▁the ▁Great ▁Fire ▁of ▁ 1 8 5 2 . ▁The ▁square ▁was ▁created ▁in ▁ 1 8 7 6 ▁and ▁was ▁named ▁for ▁two ▁business men , ▁brothers ▁Em manuel ▁Saint - Louis ▁and ▁Jean - B apt iste ▁Saint - Louis . ▁ ▁The ▁Project ▁for ▁Public ▁Sp aces ▁has ▁called ▁the ▁square ▁" the ▁closest ▁thing ▁to ▁a ▁European ▁neighbourhood ▁square ▁you ' ll ▁find ▁this ▁side ▁of ▁the ▁Atlantic ." ▁ ▁Struct ures ▁The ▁square ▁features ▁a ▁Victor ian ▁f ount ain ▁as ▁its ▁cent rep ie ce . ▁A ▁b ust ▁of ▁Oct ave ▁C ré ma zie ▁was ▁un ve iled ▁on ▁June ▁ 2 4 , ▁ 1 9 0 6 , ▁designed ▁by ▁Louis - Ph ili ppe ▁H é bert , ▁near ▁the ▁home ▁of ▁É mile ▁N ellig an , ▁which ▁faces ▁the ▁square . ▁N ellig an ▁himself ▁was ▁hon oured ▁with ▁a ▁b ust ▁in ▁the ▁square ▁ 9 9 ▁years ▁later , ▁on ▁June ▁ 7 , ▁ 2 0 0 5 , ▁designed ▁by ▁Ros eline ▁Gran et . ▁ ▁S urr ounding ▁buildings ▁▁▁▁ ▁The ▁square ▁is ▁also ▁notable ▁for ▁the ▁Victor ian - style ▁resid ences ▁that ▁face ▁the ▁park . ▁The ▁Union ▁des ▁é criv aines ▁et ▁des ▁é criv ains ▁qu éb