Article Detail Which is Largest Dome in World ? Answer: St. Peter's Basilica (Rome) Similar Questions : 1. Which is the largest epic in world ? Answer: Mahabharat 2. Which is the longest day in the year ? Answer: June 21 3. Which is the biggest museum in the world ? Answer: British Museum, London 4. Which is the largest desert in India ? Answer: Thar (Rajasthan) 5. Which is the Largest lake of the world ? Answer: Caspian Sea (371,000 sq km) 6. Which is Largest Dome in World ? Answer: St. Peter's Basilica (Rome) 7. Which is Longest Dam in India ? Answer: Hirakod Dam (Orissa) Read more from - Longest and Largest