[dylan604]

Any building with a domed ceiling is ripe for interesting reflections as well. There's a story of US congress/senator during a negotiation offering to step to the other side of the room to allow his "colleagues" to confer in private knowingly as he could hear their conversations due to the reflections off the dome.

[euroderf]

Sure. If you take the tour, a guide demonstrates it. Or at least did in the 80s.

[tomcam]

Instant 70s-style album cover