The church consists of a nave, a west tower, a narrower, straight-ended chancel, and a sacristy added against the chancel's north side. Built of sandstone with limestone door surrounds, the nave, tower and chancel form a unified structure from the later thirteenth century, though the sacristy dates from 1814 and was enlarged in 1862. The white-rendered facades leave the stone corner quoins and door surrounds exposed, and the tower's present upper storey and short spire date from an 1864 rebuilding.
Inside, the nave, chancel and ringing chamber are each covered by a tent vault, with the nave vault ranking among the largest of its kind on Gotland. During a restoration led by architect Jan Utas in 1989–1990, medieval wall paintings were uncovered. The chancel's ornamental decoration, including quadratura painting on the triumphal arch, dates from the late thirteenth century, while two surviving scenes from a Passion cycle in the nave are attributed to the circle of the so-called Passion Master, active in the fifteenth century. Traces of later, post-Reformation decoration also survive, along with medieval graffiti-like scratch drawings and a well-preserved holy water niche in the inner reveal of the nave portal.
Among the furnishings, the sandstone altarpiece was made in nearby Burgsvik in 1692 and depicts Abraham preparing to sacrifice Isaac, flanked by Moses and Aaron. The altar rail and choir stalls date from the seventeenth century, the font from 1699, and the pulpit possibly from 1706. A poor box survives from 1786, and a votive ship from the 1870s was donated by a local seaman from Näs. The triumphal crucifix seen today is a copy of a medieval original.
The mechanical organ was built in 1967 by Andreas Thulesius of Klintehamn. In 1986, archaeologists investigated the foundations of what nineteenth-century maps suggest was a kastal, a defensive tower, near the old Näs schoolhouse; the stone footing found measured roughly 5.5 by 3.8 metres, with the remainder thought to lie beneath the schoolhouse itself.