San Juan, Metro Manila – Wikipedia

Etymology “San Juan City” is a contraction of the city’s traditional name of “San Juan del Monte” (lit. Saint John of the Mountain).As with numerous other places in the Philippines, the name combines a patron saint and a toponym; in this case Saint John the Baptist with the locale’s hilly terrain and relatively higher elevation compared to surrounding areas.

: https://en.wikipedia.org/wiki/San_Juan,_Metro_Manila