County Tipperary: See
Rock of Cashel is the county standout, a crag with several religious ruins.
Cahir has the Castle, Swiss Cottage, and Mitchelstown Caves.
Terryglass at the north end of Lough Derg is an attractive village.
Glen of Aherlow is a scenic area south of Tipperary. It's backed by the Galtee mountains, where Galtymore reaches 918 metres.
Holycross Abbey is a church within a ruined abbey with fragments of the True Cross, allegedly.
Lough Derg, part of the River Shannon, extends for 50 km through Ballina, Garrykennedy, Dromineer, Puckane, Terryglass and on up to Portumna in County Galway. You can make a circuit, returning along the County Clare side of the lough.
Ormond Castle is a fine Elizabethan manor house at Carrick-on-Suir, east of Clonmel.
"First Fruits" churches: After the Reformation, the Anglicans (i.e. establishment Protestants) took over all the churches, and Catholics weren't allowed to build their own or hold mass - or else! Anglican churches were supported by a tithe, a tax (nominally 10% of arable produce) on parishioners. But Ireland remained too darned Catholic and too darned Irish for the likes of its rulers, so one initiative was the "Board of First Fruits" set up in 1711 to establish more Protestant churches in Ireland. This was funded by the cunning ruse of taxing the Catholics an equivalent amount to a tithe. (Since they were being spared the expense of having their own churches, they surely couldn't begrudge the tax could they now?) County Tipperary received the bulk of these "First Fruits" churches. There are good surviving examples in Thurles, Roscrea and Terryglass, with others in ruins.