I have a thing for caves and tunnels. We recently discovered a conservation area here in Hamilton that has some caves — it’s really cool. When we lived in BC, we enjoyed visiting the BC Museum of Mining and the Othello Tunnels. A couple of weeks ago, I saw this item about the world’s oldest subway tunnel in New York City. There are guided tours. Someday I’d like to check it out. As the crow flies, NYC isn’t that far away — in fact, at night we can easily listen to most of the big radio stations from the Big Apple. It’s just one of those things that’s on our list of must-sees.