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The walled city of Intramuros is the oldest district in Manila, founded in 1571 as the center of Spanish colonial rule in the Philippines -- for a time, "Manila" and "Intramuros" meant essentially the same place. Spanish colonial influence still shapes nearly every corner of the district, visible in its street layout, churches, and surviving colonial-era buildings.

Intramuros sits along the southern bank of the Pasig River, referring literally to the area "within the walls" of old Manila, Philippines.
Several of Intramuros's most visited sites, including Manila Cathedral and San Agustin Church, remain active places of worship -- modest dress and quiet behavior are expected, particularly during services.
Kalesa (horse-drawn carriage) rides are a popular, traditional way to see the district, though animal welfare in Manila's kalesa trade has drawn real, documented concern in recent years -- visitors who'd rather not ride one can see the same sites comfortably on foot or by e-trike instead.
Much of Intramuros is still under active restoration after wartime destruction -- respecting barriers around work-in-progress areas and not removing or disturbing loose masonry helps preserve what conservators are actively trying to rebuild.
Intramuros is easily reached from elsewhere in Manila by taxi, rideshare, or the LRT/MRT rail lines to nearby stations, followed by a short walk or tricycle ride into the district.
Walking is the most flexible way to explore, though a guided walking tour -- widely available and generally inexpensive -- adds context that's easy to miss wandering independently, particularly around Fort Santiago and the district's various shrines. Kalesa rides offer a more traditional, slower-paced way to cover more ground, especially useful in Manila's heat.
Individual sites like Fort Santiago, Casa Manila, and Manila Cathedral each keep their own hours and, in some cases, separate entrance fees -- worth checking specific opening times in advance if a particular site is a priority, since they don't all follow one unified schedule.