Sälischlössli, Cultural property in Starrkirch-Wil, Switzerland.

Sälischlössli is a romanticising residential-tower cube with a crenellated parapet, corner turrets and a slender stair tower, standing on a platform with a terrace above the Aare valley. It was built in 1870/71 by enlarging the ruin of Neu-Wartburg, founded around 1260, in a historicist Picturesque style to plans by Paul Reber.

Around 1260 the lords of Ifenthal, ministerials of the counts of Frohburg, built Neu-Wartburg on the Engelberg above the Aare valley, some 150 m south of the older Alt-Wartburg. In 1415 Bernese troops burned both castles; the Hallwyls restored Neu-Wartburg, and in 1539 Solothurn bought it. From 1547 to 1846 it served as a fire watch, and the name comes from the Sali watchmen family, in office until 1774.

The name Sälischlössli comes from the Sali family, fire wardens who held the post until 1774, when the castle served as a fire watch from 1547 to 1846. Since 2006 the castle has been one of several Solothurn canton venues where civil weddings can be held. The restaurant reopened in March 2016, open Wednesday to Sunday.

The Sälischlössli stands on a terrace platform on the Engelberg above the Aare valley near Starrkirch-Wil, reachable on foot from the surrounding area. Since March 2016 the restaurant has been open Wednesday to Sunday after a temporary closure. The building is a listed B-object, so the historic tower and stair turret are seen from outside; wedding ceremonies can be held here as at other Solothurn castles.

The name Sälischlössli comes from the Sali family, fire watchmen who held the post until 1774. From 1547 to 1846 the castle served as a fire lookout, and during the Second World War an aircraft observation post was stationed here. Since 2006 civil weddings have been held in the building.