Leandro Valencia Locsin, Sr., also known by the initials LVL and the nickname "Lindy", was a Filipino architect, artist, and interior designer known for his use of concrete, floating volume and simplistic design in his various projects. An avid collector, he was fond of modern painting and Chinese ceramics. He was proclaimed a National Artist of the Philippines for Architecture in 1990 by the late President Corazon C. Aquino.
The Church of the Holy Sacrifice in the University of the Philippines Diliman was the first building designed by Locsin to be constructed. Built by Alfredo L. Juinio and fellow UP professors, it is the first circular church and the first thin-shell concrete dome in the Philippines.