If you have extra time, you can visit the following sites: San Agustin Church, National Planetarium, Manila Ocean Park, and Casa Manila Museum. If you have limited time, consider removing Binondo from the itinerary and spend more time at Intramuros or visit the shopping malls like the SM Megamall or the Ayala Center Makati. Remember that comfort should come first when traveling so wear comfortable clothes and carry enough drinks, as Manila can be scorching during travel dates.