Start the day by exploring the historic Fort Santiago, where you can learn about the city's Spanish colonial past and the national hero, Jose Rizal, who was imprisoned here before his execution. Make sure to check out the dungeons and the beautiful gardens.
Visit the San Agustin Church and Museum, the oldest stone church in the country, built in 1589. Marvel at the intricate Baroque carvings and explore the museum's collection of religious artifacts and art pieces.
Enjoy a delicious lunch at Ilustrado Restaurant, located within the historic walled city of Intramuros. The restaurant offers a range of Filipino and Spanish dishes, with indoor and outdoor seating options.
Explore the newly opened National Museum of Natural History, which houses a vast collection of flora, fauna, and geological specimens in the Philippines. Don't miss the impressive "Tree of Life" installation in the central hall.
End the day with a stroll along Manila Baywalk, a 2-kilometer promenade with stunning views of the sunset over the bay. There are also plenty of restaurants and bars along the way if you want to grab a drink or a bite to eat.
If you have more time, consider visiting the Rizal Park or the National Museum of Fine Arts. For a side trip, you can take a ferry to the nearby Corregidor Island, which played a significant role in World War II. Make sure to bring sunscreen, a hat, and comfortable shoes as the weather can get hot and humid. Don't forget to try some local street food such as halo-halo or balut.