• Montalban Gorge
• Taal Volcano
• Chocolate Hills of Bohol
• Ilocos Norte Sand Dunes
• Proposed Monuments

The Montalban Gorge is located approximately 14° 45‘ latitude and 121° 08‘ longitude. The Montalban Gorge is generally a limestone formation formed 25 million years ago through the accumulation of calcareous precipitates and remains of marine organisms in warm shallow seas at the eastern edge of the Central Luzon Basin. Dynamic forces within the earth uplifted and exposed the formation to continuous passage of water along fractures of the limestone body. As such, the Montalban limestone formation is quite significant since it serves as a permanent laboratory for studies on geological processes.