Puerto Princesa City nestled in the center of the island province of Palawan. It is the biggest city in the country, it sprawls across 253,982 hectares of land and stretches 106 kilometers long. Puerto Princesa City, the capital of Palawan, is a first class city in the Philippines. Puerto Princesa features a spectacular limestone karst landscape with its underground river. A distinguishing feature of the river is that it flows directly into the sea, and the lower portion of the river is subject to tidal influences.