Stiklestad Church was built at the site of the Battle of Stiklestad and completed in 1180. During the battle in 1030, St. Olaf received three severe wounds—in the knee, in the neck, and the final mortal blow through the heart—and died leaning against a large stone. The church building is assumed to have been erected on the exact spot where St. Olaf was killed during that battle and that stone is supposedly still inside the altar of the church. The church was designed by Archbishop Øystein Erlendsson.
References:The Basilica of Santa Maria in Trastevere is one of the oldest churches of Rome. The basic floor plan and wall structure of the church date back to the 340s, and much of the structure to 1140-43. The first sanctuary was built in 221 and 227 by Pope Callixtus I and later completed by Pope Julius I.
The inscription on the episcopal throne states that this is the first church in Rome dedicated to Mary, mother of Jesus, although some claim that privilege belongs to the Basilica di Santa Maria Maggiore. A Christian house-church was founded here about 220 by Pope Saint Callixtus I (217-222) on the site of the Taberna meritoria, a refuge for retired soldiers. The area was made available for Christian use by Emperor Alexander Severus when he settled a dispute between the Christians and tavern-keepers.
The church underwent two restorations in the fifth and eighth centuries and in 1140-43 it was re-erected on its old foundations under Pope Innocent II.