Visible from miles around, the cathedrals of Saint Paul's in London, Saint Stephen's in Vienna, and Washington, D.C. are all masterpieces that crown their cities' skylines. Basking in the history and grandeur of these houses of worship, Sue Dobson profiles such sites as Montreal's Notre-Dame Basilica, Poland's rustic Church of Peace, Romania's painted monasteries, and Ethiopia's rock-hewn churches of Lalibela. Here too are some more modern standouts, like Dresden's reconstructed Frauenkirche and Antonio Gaudi's Sagrada Familia, plus a selection of smaller but distinctive parish churches.