The Cathedral Basilica of St. Louis

That's the name; no kidding. Isn't that like calling something an onion shallot or a prince king?

But it's lovely: basically every available surface has been covered with mosaics and there's lots of gold. It's not unlike the National Shrine (they must've been built around the same time) in its Byzantine-Romanesque architecture.

The acoustics, though? Not so good.