There are many Baluartes in Manila. Baluarte de San Diego was one of the main ones I wanted to visit.
It was smaller than expected but I tried to picture myself in the 1580s(when it was built). I think it would've done the job until the British Army breached it in 1762(but I would've been dead by then). Being on the southwest corner of the Intramuros made it feel much stronger(as it had to be). I can't say the same about some of the other forts(that felt majorly inadequate as far as forts go). This fort is part and included in the Intramuros now. It's probably for the best that a university is close by and it's kind of this small little area where you don't feel like you're in Manila anymore. San Diego, other forts, churches, architecture, and so on are all well preserved.
Baluarte De San Diego is on the smaller side but I do think it has the best design of the ones we visited. The only thing that does suck about it is on the far side of it. There is this green space which is great but it's also accompanied by a sign that says, "Watch for golf balls" so yea... It sits right next to a tiny golf course(you wouldn't know it if it weren't for the sign).
Going up the steps and checking out the fort is cool but it's also hot at the top. I typically don't complain about heat but this is one time where the Manila heat got to me a little. Down the stairs, there are plenty of spots to rest and/or picnic. We didn't spend much time in the courtyard because there was a group there having some type of group outing. It was packed at the bottom.
One thing I find weird about the fort is all the plant growth inside of it. It might've just been the time of the year we were there, but plants have taken over the fort floors. That made it look more garden-like rather than a structure built to keep the bad guys out.
There are quite a few things to see in the Intramuros. I'd put this place up near the top of places you must stop. read more