
Church of San Mattias, Tumauini (Isabela)
The church walls are made entirely of brick. The façade is a magnificent display of the use ornamented brick laid out in characteristic design. Customized bricks were numbered, and placed customized to fit the walls. The interior of the church, similar to the façade is veneered with ornamented bricks. The upper half of the interior wall is laid with ornately designed brick blocks.
The bell tower of the church is cylindrical. The complex is fenced with brick walls, which is also ornamented like the rest of the church. The convent, located at the Gospel side of the church is now in ruins. (Text from UNESCO World Heritage Tentative List)