A large northern province traversed by the Cagayan River, featuring the limestone beauty of Callao Cave and Palaui Island.
A magnificent seven-chamber limestone cave in Penablanca, Cagayan, notable for having a chapel built inside its first ch...
A magnificent limestone cave with seven chambers, the largest featuring a chapel built inside with natural skylight open...
One of the longest suspension bridges in the Philippines, spanning 1,298 meters across the mighty Cagayan River in Lal-l...
A protected landscape and seascape off the northeastern tip of Luzon, Palaui was featured in the international Survivor ...
A remote island at the northeastern tip of Luzon with pristine beaches and Cape Engano Lighthouse. Named one of the worl...