▁of ▁his ▁most ▁end uring ▁idea ▁– ▁the ▁creation ▁of ▁large ▁private ▁commun al ▁gard ens , ▁originally ▁known ▁as ▁" ple asure ▁grounds ", ▁or ▁" p add ock s ", ▁en closed ▁by ▁terra ces ▁and / or ▁cres c ents ▁of ▁houses . ▁ ▁Instead ▁of ▁houses ▁being ▁set ▁around ▁a ▁garden ▁square , ▁separated ▁from ▁it ▁by ▁a ▁road , ▁All ason ' s ▁houses ▁would ▁have ▁direct ▁access ▁to ▁a ▁se cluded ▁commun al ▁garden ▁in ▁the ▁rear , ▁to ▁which ▁people ▁on ▁the ▁street ▁did ▁not ▁have ▁access ▁and ▁generally ▁could ▁not ▁see . ▁To ▁this ▁day ▁these ▁commun al ▁garden ▁squares ▁continue ▁to ▁provide ▁the ▁area ▁with ▁much ▁of ▁its ▁att raction ▁for ▁the ▁wealth iest ▁household ers . ▁ ▁In ▁ 1 8 3 7 ▁the ▁Hi pp od rome ▁race course ▁was ▁laid ▁out . ▁The ▁race course ▁ran ▁around ▁the ▁hill , ▁and ▁by stand ers ▁were ▁expected ▁to ▁watch ▁from ▁the ▁sum mit ▁of ▁the ▁hill . ▁However , ▁the ▁vent ure ▁was ▁not ▁a ▁success , ▁in ▁part ▁due ▁to ▁a ▁public ▁right ▁of ▁way ▁which ▁travers ed ▁the ▁course , ▁and ▁in ▁part ▁due ▁to ▁the ▁heavy ▁cl ay ▁of ▁the ▁neighbourhood ▁which ▁caused ▁it ▁to ▁become ▁water log ged . ▁The ▁Hi pp od rome ▁closed ▁in ▁ 1 8 4 1 , ▁after ▁which ▁development ▁res umed ▁and ▁houses ▁were ▁built ▁on ▁the ▁site . ▁The ▁cres cent - sh aped ▁roads ▁that ▁circum vent ▁the ▁hill ,