In Viher, above the hamlet of Hrastno, stands a rather secluded chapel of ease dedicated to the Holy Spirit. Its history is very complex. The church appears relatively early in historical sources and is one of the oldest chapels of ease in the parish of Šentrupert. Viher is first mentioned in a document from 1275. The semicircular Romanesque portal in the south wall of the nave is proof that the church was already standing in the 13th century. The nave was added to an older sanctuary before 1644, when two fine Renaissance altars were installed. In 1823 the bell tower and sacristy were added, while in 1836 the original wooden ceiling in the nave was replaced by vaulting.
The sanctuary is of a piece, the result of a single design in the form of the old Slovene Gothic churches with a polygonal termination and a ribbed vault. The pointed chancel arch separates the sanctuary from the nave, which has been rebuilt several times. The sanctuary and the chancel arch are decorated with frescoes – on the nave side, too, in the case of the chancel arch. The frescoes were painted in around 1520 and represent, together with the remains of the frescoes in the Šentrupert church and those on Okrog, a special stylistic group linked to the frescoes at Podpeč near Moravče. The fresco on the north side of the sanctuary is a real curiosity: it depicts the apostle James dressed in ‘civilian’ clothes as a pilgrim, which indicates that the donor of the frescoes is hidden in this figure.
The high altar dates from 1753, although the two side altars, dated 1644, are more important: the right-hand altar is dedicated to the Fourteen Holy Helpers; the left-hand altar to St Anne. Both are the work of a modest but stylistically faultless woodcarving workshop whose products bore the initials H.G.G. (Hans Georg Geigerfeld) and which between 1641 and 1655 also supplied other chapels of ease in the area of the Mirna and Ribnica valleys. This workshop is presumed to be the originator of the style of gilt altar carving which culminated, at the end of the 17th century, in altars with exuberant acanthus-leaf decoration. The workshop was based somewhere in Dolenjska, probably in Novo Mesto.