The Aguinaldo Shrine is a historical marker located in Palanan, Isabela, where the first Philippine President, Emilio Aguinaldo, surrendered to the American forces in March 1901. It overlooks the Palanan River. 

Dibulo Falls is considered as the tallest waterfalls in all of Isabela. Featuring a narrow, 100-meter-high cascade, it is surrounded by lush greenery and the Sierra Mountain Range. It is partially developed with cemented steps for easier access.

The Northern Sierra Madre Natural Park is the largest protected area of the Philippines covering the northern range of the Sierra Madre mountains of eastern Luzon. In 2006, it was added to the Philippines' tentative list of potential UNESCO World Heritage Sites. The park is considered the richest in terms of genetic, species and habitat diversity in the Philippines and is one of the country's top ten priority protected areas.

The Palaui Island Protected Landscape and Seascape is an island that is a protected area and national park in the municipality of Santa Ana in Cagayan province, Philippines. Located off the northeastern extremity of Luzon Island, it features a pristine beach, a diverse range of flora and fauna, and the ruins of Cape Engano lighthouse, which was built during the Spanish colonial period.

The Iguig Cavalry Hills features 11 hectares of rolling hills with towering statues representing the Stations of the Cross. Aside from being a popular pilgrimage site for Roman Catholics during the Holy Week of the Lenten Season, it is also known for its majestic view of the Cagayan River - the longest river in the Philippines.

Nagudungan Hills is a majestic viewpoint in Calayan Island with unique, serrated volcanic rock formations that slope into a deep ravine. It leads down to hidden beaches and shallow caverns, some of which contain ancient burial jars.

Explore the corners of Duba Cave and swim in its emerald waters. It is known for its stunning skylight which can be accessed by climbing numerous rock formations and a good 15 to 20-minute swim to see the magnificent skylight falls whose opening is flanked by stalactites and stalagmites. At dusk, a cinematic view of circadian bats appear, hovering above in various formations.

Buntun Bridge in Tuguegarao, Cagayan, is the second longest bridge in the Philippines. The iconic red bridge crosses the Cagayan River, and stretches from Tuguegarao City to Solana City.

The San Raimundo de Peñafort Parish Church, commonly known as the Malaueg Church or Rizal Church, is a16th century Baroque Roman Catholic church. It was declared a National Cultural Treasure by the National Museum of the Philippines in 2001. The foundations of the church were established by Dominican priests in 1617. The structure has a remarkable fired brick facade and a three-tiered bell tower out front.