Cagayan: See
Duba Cave (Baggao) is a wet river cave and a swimming cave. Almost all passages with water, which is about 70% of the way to the Skylight Falls, have large breakdowns or walls without handholds along the side so the only way through is to swim. Because of this, you should wear a lifejacket. This will ensure a safe return trip especially after the long swims in.
Rio Grande de Cagayan (Cagayan River) — the Philippines’ mightiest watercourse — is the longest and widest river in the country. Small streams originating form Balete Pass, Cordillera, Caraballo and the Sierra Madre Mountains meet other streams. It passes from Aparri traversing Isabela as far as Aurora.
Claveria Coast is called the "Coastal Paradise of the Cagayan North."
Portabaga Falls (Santa Praxedes) A well-developed resort and inn managed by the local government of Santa Praxedes. It has 5 pools catering the needs of different age levels. Local and foreign tourists come for its natural beauty.
Calayan Island (Calayan): The island town is a two-hour boat ride from Aparri. It is rich in natural attractions like excellent beaches, archeological sites, endemic flora and fauna, virgin forest, crystal clear blue waters, plus hospitable and gentle people with colorful history.
Kalamudinan Falls (Baggao) is 26 km from the center of Santa Margarita, Baggao, Cagayan. More than 100 m high and rich in shrimp (locally called udang) and fishes.
The Malaueg Church (Rizal) is at the Poblacion of the town. The church was preserved completely by UNESCO and underwent restorations. The church is made entirely of stones that was designed by Spaniards.