The Town Hall on the river
Built on a bridge
When the Town Commissioners decided to build a Town Hall in 1893, the question was Down or Armagh — the Clanrye River split the town between them. They settled the row by building the hall on a three-arch bridge over the river itself. The Earl of Kilmorey opened it in March 1894. It is the only town hall in the British Isles built deliberately to sit in two counties at once.
The 1742 canal
Older than Bridgewater
Work on the Newry Canal began in 1731 under Sir Edward Lovett Pearce, then Richard Cassels, then Thomas Steers. It opened in 1742 to haul coal from the Tyrone fields out to the Irish Sea — the first summit-level canal in Ireland or Great Britain, predating the more famous Bridgewater by nearly thirty years. The locks worked badly at first. The water supply was wrong. They got there in the end.
First after Emancipation
Newry's cathedral
The Cathedral of SS Patrick and Colman on Hill Street was the first Catholic cathedral begun in Ireland after Catholic Emancipation. Bishop O'Kelly laid the foundation stone in June 1825; the Primate dedicated the building on 6 May 1829. Designed by Newry's own Thomas Duff, built in local granite, the tower and transepts added in 1888 and the nave extended in 1904. Twenty minutes is enough to see it; an hour gets you the marble work and the mosaic floor.
August 1979
Narrow Water
Six kilometres south of Newry, on the road to Warrenpoint, two roadside bombs killed eighteen British soldiers on 27 August 1979 — the deadliest single attack on the British Army during the entire Troubles. The same afternoon, the IRA killed Lord Mountbatten in Mullaghmore. The river at Narrow Water is the border; the gunmen detonated the bombs by remote from the Cooley side. There's a small commemoration each August. The legacy commission is still examining the case.