Castling with Checkmate
There are a few famous examples of games that ended by castling checkmate such as Edward Lasker - George Thomas in London 1912 as well as an early Paul Morphy gem (my username-sake for you nerdy fans out there). But from what I can tell at least, this is a fairly rare way to end a chess game, so I feel quite fortunate that I had the opportunity in blitz today right here on chess.com.
This is a 5-minute game between amateurs so it's full of mistakes and not worth analyzing in-depth. Just thought I'd share this so you might enjoy it purely for its aesthetic ending. Hope you enjoy!