So, my first recommendation would be to visit Intramuros (inside the walls, roughly translated) in Manila. It's the old colonial walled city and inside it you can visit the San Agustin church - the oldest church in the Philippines and the only original building in Intramuros that was left standing after Manila was virtually destroyed during WWII. Fort Santiago, also in the walled city is dedicated to the hero of Filipino independence, Jose Rizal - you can learn about his imprisonment and martyrdom by walking through some fascinating exhibits in the fort which centre around his life and work. Next, go and check out the American Cemetery in Taguig, Manila. For the famous Manila nightlife check out the bars and clubs in the old Malate district of Manila.