Tillitse Church was built in the first half of the 13th century and extended towards the west in the early 17th century. Little is known of its ownership in the Middle Ages but the Crown had clerical appointment rights at the time of the Reformation. In 1648, it was transferred to the ownership of the Rudbjerggård Estate where over the years it was governed by F.B. Bülow and Gustav Smith. It came into the ownership of Gustav Smith c. 1850 and was transferred to the Friderichsen family in 1850. In c. 1880, it was taken over by Landsmandsbanken which transferred it to the local congragation in 1907.
The church consists of a Romanesuqe apse, chancel and nave. It was extended towards the west in 1625 with a porch on the west gable in 1856. An arched frieze decorates the upper apse, topped by a saw-toothed cornice. Its three finely finished Romanesque windows have now been bricked up. The profile of the chancel's former south door can still be seen. There is a saw-tooth decoration along the top of the chancel with a more recent cornice. The remains of the nave's south portal extend up to the roof. The old Romanesque windows have been replaced by modern pointed-arch windows. There are lesenes on the east corner but those on the west corner have been removed. There is also an arched decorated topped by a saw-toothed line along the top of the nave.
The carved altarpiece from 1642 is the work of Jørgen Ringnis. It bears the arms of Joachim von Barnewitz, Øllegaard Pentz and Hartwig Passow. The Renaissance pulpit from 1608 presents the arms of Knud Rud and Ellen Marsvin. The church also contains a sandstone epitaph for Joachim von Barnewitz (died 1626) and Øllegaard Pentz (died 1654). There is a Romanesque font.
There is a free-standing runestone listed as DR 212 in the Rundata catalog that is outside the church porch. It was originally found in the churchyard wall in c. 1627 and was later used as a foundation for the porch. Dated to the mid-11th century, it is 143 cm high and 81 cm wide. The stone contains two inscriptions which read (translated): 'Áskell, Súlki's son, had this stone raised in memory of himself. Ever will stand, while the stone lives, this memento, which Áskell produced. May Christ and Saint Michael help his soul.' and 'Tóki carved the runes in memory of Þóra, his stepmother, a good wife.'
References:
Towering 52 meters above the sea, Bengtskär lighthouse is the tallest one in Scandinavia. The building started in in 1905 after the shipwreck of S/S Helsingfors and was completed in 1906. The lighthouse was designed by architect Florentin Granholm. On December a special petrol lantern, designed and built in Paris, was brought to Bengtskär and installed atop the tower.
German fleet bombarded Bengstkär in the First World War in 1914. Since the Gulf of Finland was heavily mined, it was not until 1919 that the surrounding seas were declared safe for shipping, that the light was lit again.
After the war the military value of Bengtskär increased as part of the defence system of independent Finland. In Second World War (1941) Soviet Union made a suprise attack to island. After a bloody battle, the small Finnish garrison emerged victorious. Intermittent repairs to the facility continued during the post-war period.