Old Goa is a UNESCO World Heritage Site known for its grand cathedrals and historic monuments. Must-visits include Basilica of Bom Jesus (housing St. Francis Xavier's remains), Se Cathedral, and Church of St. Francis of Assisi. These 16th-century structures reflect the glory of Portuguese-era architecture and Christianity in India. A spiritual and architectural delight for history buffs and culture lovers. Old Goa is a journey back in time.