Husby-Ärlinghundra Church, Medieval church in Sigtuna Municipality, Sweden

Husby-Ärlinghundra Church is a church in Sigtuna Municipality featuring an unusual tower at the eastern end with a rounded spire that extends over the choir and altar sections. The building combines a stone-built religious structure with a cemetery that now serves as the main burial ground for Märsta Parish.

The stone structure began construction in the 1150s, with the tower, choir, and approximately one-third of the nave surviving from this original medieval period. The building's eastern tower design became a defining feature that has remained unchanged through the centuries.

Inside you can find medieval sculptures including a 13th-century figure of St Michael defeating a dragon and 14th-century depictions of Mary and John near the cross. These carvings are part of the building's religious decoration that visitors notice during a visit.

The churchyard wall of grey stone survives, but its former shingled roof and the two stile openings were removed; the stiles went in 1833, leaving a single entrance on the south side with brick pillars and iron gates. The bell tower stands at the eastern side of the churchyard wall, and rune stones U433, U434 and U435 are set into the church and sacristy walls.

The east tower puts the bells and tower above the altar and choir rather than at the entrance. The church is one of four medieval east-tower churches in Stockholm County, and its tower lost height in 1719 when the spire was replaced by the present bulbous roof. A rune stone, U433, is set into the church wall east of the south porch.