Durrow Abbey is a historic site located off the N52 some 5 miles from Tullamore, County Offaly, Ireland. To this day, the site remains a largely undisturbed early historic and medieval monastic site containing a complex of archaeological monuments, ecclesiastical and secular, visible and sub-surface. The extant monuments at the site include a large ecclesiastical enclosure, five Early Christian grave slabs, a fine mid-ninth century high cross, a fragment of a cross shaft, a complete cross-head (housed in the National Museum of Ireland) and cross base, a holy well and other extensive archaeological features. It also includes a motte built by Hugh de Lacy in the 1180s and it was here that he was killed in 1186 by an Irishman.