The Esquiline & the Viminal are 2 of the 7 hills on which this ancient city was built
The other 
hills are the Capitoline, Quirinal, Viminal, Esquiline, Caelian, and Aventine... [DOC] [TLE] THE SEVEN HILLS OF ROME - EUdesign [PAR] ... that recalls the names of the seven hills on which ancient Rome was built.