Generally, the area's topography is hilly and rolling, dominated by open grasslands and second-growth forests.

It was a part of the defense system in dispelling the Moro raiders of the past, which included 6 other watchtowers along the coastline of Oslob.

This prompted them to relocate the town to its present site from their fortified settlement in Daanglungsod, which is now in ruins but still breathtaking.

[19] Oslob was established as a visita of Boljoon in 1690 and became an independent parish in 1848 with the Immaculate Conception as its patroness.

The church was burned down during the Second World War liberating Philippine Commonwealth troops and Cebuano guerillas against the Japanese in Oslob in 1945, and 1955 but was eventually restored.

Across the road from the church is the former mortuary chapel with a pediment decorated with a relief of a human skeleton.

In 2008, a fire gutted the 19th-century church's interior, including the altar and adjacent rectory, but it spared the image of Our Lady of Immaculate Conception, which is inside a glass case, and the 73 other icons near the door to the bell tower.

[20] Located front right of the church of Oslob, just outside the perimeter stone fence and near the sea, at the intersection of Calle Aeternidad and the end of Calle Aragones, stands an unfinished building made of coral blocks resembling a Spanish-era barracks.

[24] Sumilon has four major dive sites, which are Garden Eel Plaza, Nikki's Wall, Coral Landscape and Julie's Rock.

On the south portion of the island, a lighthouse rests on a protected tree park, and beside it is a "baluarte", a historical watchtower built as part of a warning system to thwart slavers and marauders in the 19th century.

However, qualified voters in Mandaue are allowed to vote in elections for Cebu provincial officials by virtue of Republic Act No.