The medieval church of Saint Peter and Paul in Kaarma is one of the most interesting sights in Saaremaa island. The building was probably started right after the uprising of Saaremaa inhabitants in 1261. It was a typical church of the Osilia Bishophric - a simple nave with a slightly narrower choir. The steeple was added in the 15th century and thus Kaarma became the first church with a steeple on Saaremaa.
The church is built on unstable ground and during construction an accident seems to have occurred, and part of it seem to have collapsed. The nave did not acquire its present vaults until the 15th century. The relatively wide nave was divided into two aisles for safety purposes. Sometime prior to the 15th century reconstructions, a room with a fireplace was built above the vestry. This room could serve as a place of refuge for the colonizers from the angry natives of Saaremaa. Later, it became shelter for pilgrims who followed a route that included churches on the island of Gotland and Saaremaa.
The murals on the northern wall of the choir originate from the old church. They depict a painted illusionary window and a scene with St. Christopher. Unfortunately, only the legs seem to have survived. The proceedings were observed by a hermit carrying a lantern.
Many pieces of art have survived in Kaarma church. There is a medieval baptismal font (13th century) and a wooden sculpture of St. Simon of Cyrene (mid-15th century) standing under the pulpit. The pulpit, dating from 1645, is also worth noting. The present Neo-Gothic altarpiece depicts a painting by O. von Moeller of Christ on the Cross. The niches in the altar was formerly filled by medeival carvings of the apostles. These sculptures can now be seen in the Saaremaa Museum in Kuressaare.
The Palazzo Colonna is a palatial block of buildings built in part over ruins of an old Roman Serapeum, and has belonged to the prestigious Colonna family for over twenty generations.
The first part of the palace dates from the 13th century, and tradition holds that the building hosted Dante in his visit to Rome. The first documentary mention notes that the property hosted Cardinal Giovanni and Giacomo Colonna in the 13th century. It was also home to Cardinal Oddone Colonna before he ascended to the papacy as Martin V (1417–1431).
With his passing, the palace was sacked during feuds, and the main property passed into the hands of the Della Rovere family. It returned to the Colonna family when Marcantonio I Colonna married Lucrezia Gara Franciotti Della Rovere, the niece of pope Julius II. The Colonna"s alliance to the Habsburg power, likely protected the palace from looting during the Sack of Rome (1527).
Starting with Filippo Colonna (1578–1639) many changes have refurbished and create a unitary complex around a central garden. Architects including Girolamo Rainaldi and Paolo Marucelli labored on specific projects. Only in the 17th and 18th centuries were the main facades completed. Much of this design was completed by Antonio del Grande (including the grand gallery), and Girolamo Fontana (decoration of gallery). In the 18th century, the long low facade designed by Nicola Michetti with later additions by Paolo Posi with taller corner blocks (facing Piazza Apostoli) was constructed recalls earlier structures resembling a fortification.
The main gallery (completed 1703) and the masterful Colonna art collection was acquired after 1650 by both the cardinal Girolamo I Colonna and his nephew the Connestabile Lorenzo Onofrio Colonna and includes works by Lorenzo Monaco, Domenico Ghirlandaio, Palma the Elder, Salviati, Bronzino, Tintoretto, Pietro da Cortona, Annibale Carracci (painting of The Beaneater), Guercino, Francesco Albani, Muziano and Guido Reni. Ceiling frescoes by Filippo Gherardi, Giovanni Coli, Sebastiano Ricci, and Giuseppe Bartolomeo Chiari celebrate the role of Marcantonio II Colonna in the battle of Lepanto (1571). The gallery is open to the public on Saturday mornings.
The older wing of the complex known as the Princess Isabelle"s apartments, but once housing Martin V"s library and palace, contains frescoes by Pinturicchio, Antonio Tempesta, Crescenzio Onofri, Giacinto Gimignani, and Carlo Cesi. It contains a collection of landscapes and genre scenes by painters like Gaspard Dughet, Caspar Van Wittel (Vanvitelli), and Jan Brueghel the Elder.
Along with the possessions of the Doria-Pamphilij and Pallavacini-Rospigliosi families, this is one of the largest private art collections in Rome.