At the northwest corner of Retiro Park is Puerta de Al?­ca?­l?¡, a monumental triumphal arch surmounted by warrior-angels, honoring Carlos III.
The arch is a favorite spot for young couples to meet. 
mnli hypothesis: The arch is a favorite spot for young couples to meet.  premise: At the northwest corner of Retiro Park is Puerta de Al?­ca?­l?¡, a monumental triumphal arch surmounted by warrior-angels, honoring Carlos III.