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Photo: Cray Ideas, CC BY-SA 4.0 via Wikimedia Commons
40 m tunnel, once used as a Japanese army headquarters.
The Ilagan Japanese Tunnel is a war tunnel that was part of a military base built by the Japanese government as headquarters for its soldiers during World War II. It is found in barangay Santo Tomas in Ilagan, Isabela. It is one of the few remaining tunnels in the province. It measures about 40 meters in length and slightly over three meters in width and height. The real size of the tunnel, however, has yet to be determined as the site has yet to be fully checked and explored.
© OpenStreetMap contributors
A large modern sports center opened 2015 to replace the older Paguirigan Memorial Sports Complex. It has badminton, basketball, tennis, and volleyball courts, an 8-lane swimming pool, and an IAAF-certified track and field.
Formerly the seat of the Diocese of Ilagan, it houses the oldest bells in the province. The church, save for its belfry, was gutted by fire in 2024 and is undergoing reconstruction.
There are guided tours where visitors can see the mechanized process of how Coca-Cola is produced.
Housed in the old provincial capitol building, the museum has a collection on the province's history and culture.
Butaka
This, the largest in the world, was constructed within 29 days with a cost of ₱175,000.
Houses a statue of Andres Bonifacio. It is also a common site for demonstrations.