1mi/2km northeast of the town of Navan on the N51, at Donaghmore, is the site of an early monastery, with a well-preserved round tower and a church (National Monuments). St Patrick is said to have founded his first monastery in Ireland here. The tower (10th C?) has a round-headed doorway 12ft/3.6m above the ground with a relief of the
Crucifixion above it and a human mask on either side of the architrave. The church is 15th C. There are early gravestones in the churchyard.
On a hill to the east stands Dunmoe Castle (National Monument): two sides of an original rectangular structure (16th century) with round towers at the corners.