Fodor's Expert Review Mosta Rotunda

The Rotunda (Church of St. Mary) has one of the biggest domes in Europe—after St. Peter's in Rome and Hagia Sophia in Istanbul—and took 27 years to build. Towering above the center of Mosta, a town with a population of less than 20,000, it's a striking sight. Remarkably, a German bomb fell through the roof during World War II while the town held mass; it failed to detonate, sparing the lives of 300 people.