A large valley region in northeastern Luzon drained by the Cagayan River, the longest river in the Philippines. It includes the remote Batanes Islands and vast agricultural plains.
The smallest and northernmost province of the Philippines, with rolling hills, stone houses, and dramatic Pacific landscapes....
A large northern province traversed by the Cagayan River, featuring the limestone beauty of Callao Cave and Palaui Island....
The second largest province in the Philippines and a major rice and corn producing area in the Cagayan Valley....
A gateway province between the Central Luzon plains and the Cagayan Valley, rich in citrus orchards and highland scenery....
A small, mountainous province named after President Elpidio Quirino, known for its caves, waterfalls, and ecotourism sites....