Bollnäs church was originally built in the 14th and 15th centuries. One opening is known to have taken place November 3, 1468, probably concerning the church tower. Later alterations include the addition of the north and south transepts, built in 1753-1755.
The church holds a larger collection of wooden medieval sculptures than any other parish church in the Nordic countries. Three of the altarpieces are major works of art from the late 15th century or early 16th century, including an altarpiece dedicated to Virgin Mary, made byHaaken Gulleson c. 1520. Also dating from late 15th century or early 16th century is the most valuable eucharistic chalice, with its paten (a small plate).
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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.