Complex sentence: Soler is remembered chiefly for a monumental statue of Christ atop Mount Cristo Rey, completed in 1939, at the behest of Father Lourdes Costa, pastor of the Smeltertown parish, which covered both the New Mexico and the Texas sides of the Rio Grande.
Split into simpler sentences: Soler is remembered chiefly for a monumental statue of Christ atop Mount Cristo Rey, completed in 1939. The project was begun at the behest of Father Lourdes Costa, pastor of the Smeltertown parish, which covered both the New Mexico and the Texas sides of the Rio Grande.