You might assume from afar that this 1971 concrete cathedral is a ship’s prow or witch’s hat. This behemoth started out as a modest proposal by a local architecture firm, but the archbishop read architectural criticism in his spare time and hired MIT guru Pietro Belluschi and Italian engineer Pier-Luigi Nervi to construct this sci-fi Catholic landmark. Say what you will about the exterior, but the honeycomb ceiling has great acoustics for organ recitals.