Sending mail when travelling might just be the best thing ever. Sending mail in general is a wonderful art, but sending it when on a trip adds a whole other layer of excitement and flavour that doesn't always exist otherwise.
And then there are the stamps.
At every location that I went to in Europe over my trip in July, I sent letters adorned with stamps from that country. Something about conversing with the locals about stamps and postage rates is superbly enthralling. Maybe it is because they hold in their hands the answer to whether or not your international correspondence will ever make it to its destination...which is sort of a *big deal*.
But, seriously. Post offices are key.
These postage stamps, bought from a post office hidden between two side-streets in Venice--used whilst sitting at a table next to one of the gorgeous inlets (while a gondola rower parked and grabbed a "water with gas"), and sent from a bright red "Poste" box right down the street--brought me a lot of joy.
I encourage letter-sending in all forms, but especially when travelling. It's something we can often forget to do when busy in foreign countries. But it is well worth it.
Especially when you get to enjoy an afternoon next to the Venice waterways to do so.