The Basilica of San Sebastian, located in Recto Avenue in Quiapo, Manila, is the only church in the world made from pre-fab steel. Reputed to the the first pre-fabricated building in the world, the steel parts of the building were made in Belgium. According to historian Ambeth Ocampo, Gustav Eiffel, the designer of the Eiffel Tower and the Statue of Liberty, was involved in the design of the church, which was constructed in 1888.
The church is under consideration for inclusion to World Heritage list.
How to get there: Take the LRT Line 2 (Purple Line) from Cubao to Legarda Station, then walk along the road to Recto Avenue.