Forgotten corner

Much of Manila is very new -- and most of Pasig City, where I live, tends to be on the newer end of new, being a recent, and mostly business, district. That tends to mean uninspiring skyscrapers or hulking dictator-cement bunkers. So it's always a pleasure to bump into something graceful and with perhaps a bit of history to it. I haven't been able to figure out what this little building is, sandwiched as it is between two gigantic malls and a couple of call centers. But I always like walking past it.