Complex sentence: Near the square stands the church of St. Joachim, completed in 1898 by architect Raffaele Ingami, which was to solemnize the priestly and episcopal jubilee of Leo XIII.
Split into simpler sentences: Near the square stands the church of St. Joachim, completed in 1898 by architect Raffaele Ingami. Its purpose was to solemnize the priestly and episcopal jubilee of Leo XIII.