Pope Benedict XVI is back in Rome following his week-long-travels to Mexico and Cuba. In reviewing almost 4,000 images that documented his historic travels to the two countries, I decided to concentrate on Cuba, a country that because of travel restrictions, still remains a bit of a mystery to most of us. The first image, though, shows the Pope traveling to Cristo Rey sanctuary in Mexico to lead the holy mass celebration. The Pope urged the faithful to seek a humble and pure heart and trust in God in the face of evil. While in Cuba, in the heart of Revolution Square, with the towering images of guerrilla heroes staring back at him, the Pope called for "authentic freedom" in one of the world's most authoritarian states. Benedict's visit comes 14 years after the historic first papal trip to Cuba by Pope John Paul II, a visit that yielded an era of greater religious expression. â Paula Nelson ( 50 photos total