7 Best Sights in Dublin, Ireland

From its exterior, you'd never guess that the first Christianized Danish king built a wooden church at this site in 1038; because of the extensive 19th-century renovation of its stonework and trim, the cathedral looks more Victorian than Anglo-Norman. Construction on the present Christ Church—the flagship of the Church of Ireland and one of two Protestant cathedrals in Dublin (the other is St. Patrick's just to the south)—was begun in 1172 by Strongbow, a Norman baron and conqueror of Dublin for the English Crown, and continued for 50 years. By 1875 the cathedral had deteriorated badly; a major renovation gave it much of the look it has today, including the addition of one of Dublin's most charming structures: a Bridge of Sighs–like affair that connects the cathedral to the old Synod Hall, which now holds the Viking multimedia exhibition, Dublinia. Strongbow himself is buried in the cathedral, beneath an impressive effigy. The vast, sturdy crypt, with its 12th- and 13th-century vaults, is Dublin's oldest surviving structure and the building's most notable feature. The exhibition Treasures of Christ Church includes manuscripts, various historic artifacts, and the tabernacle used when James II worshipped here. But the real marvels are the mummified bodies of a cat and rat—they were trapped in an organ pipe in the 1860s—who seem caught in a cartoon chase for all eternity. At 6 pm on Wednesday and Thursday and 3:30 pm on Sunday, you can enjoy the glories of a choral evensong, and the bell ringers usually practice on Friday at 7 pm.

The largest cathedral in Dublin and also the national cathedral of the Church of Ireland, St. Patrick's was built in honor of Ireland's patron saint, who—according to legend—baptized many converts at a well on this site in the 5th century. The original building, dedicated in 1192 and early English Gothic in style, was an unsuccessful attempt to assert supremacy over the capital's other Protestant cathedral, Christ Church Cathedral. At 305 feet, this is the longest church in the country, a fact Oliver Cromwell's troops found useful, as they made the church's nave into their stable in the 17th century.

While in the shadow of St. Patrick's Cathedral, head from Patrick Close to Patrick Street; look down the street toward the Liffey for a fine view of Christ Church.

Make sure you see the gloriously heraldic Choir of St. Patrick's, hung with colorful medieval banners, and find the tomb of Jonathan Swift, most famous of St. Patrick's many illustrious deans and immortal author of Gulliver's Travels, who held office from 1713 to 1745. Swift's tomb is in the south aisle, not far from that of his beloved "Stella," Mrs. Esther Johnson. Swift's epitaph is inscribed over the robing-room door. W. B. Yeats—who translated it thus: "Swift has sailed into his rest; Savage indignation there cannot lacerate his breast"—declared it the greatest epitaph of all time. Other memorials include the 17th-century Boyle Monument, with its numerous painted figures of family members, and the monument to Turlough O'Carolan, the last of the Irish bards and one of the country's finest harp players. Living Stones is the cathedral's permanent exhibition celebrating St. Patrick's place in the life of the city. If you're a music lover, you're in for a treat; matins (9:40 am) and evensong (5:45 pm) are still sung on many days.

Built on the profits of sin—well, by a generous wine merchant actually—and topped with a soaring Gothic spire, this church anchors the northeast corner of Parnell Square, an area that was the city's most fashionable address during the gilded days of the 18th-century Ascendancy. Popularly known as Findlater's Church, after the merchant Alex Findlater, the church was completed in 1864 with an interior that has a stark Presbyterian mood despite stained-glass windows and ornate pews. For a bird's-eye view of the area, climb the small staircase that leads to the balcony.

A plain, neo-Romanesque granite exterior, built in 1868, belies the rich Georgian interior of this church, which Isaac Wills designed in 1720. Highlights of the interior include polished-wood balconies, ornate plasterwork, and shelving in the chancel dating from 1723—and still in use for organizing the distribution of food to the parish's poor.

One of the city's finest churches in the classical style, the Jesuit St. Francis Xavier's was begun in 1829, the year of Catholic Emancipation, and was completed three years later. The building is designed in the shape of a Latin cross, with a distinctive Ionic portico and an unusual coffered ceiling. The striking, faux-marble high altarpiece, decorated with lapis lazuli, came from Italy. The church appears in James Joyce's story "Grace."

Dublin's principal Catholic cathedral (also known as St. Mary's) is a great place to hear the best Irish male voices: a Palestrina choir, in which the great Irish tenor John McCormack began his career, sings in Latin here every Sunday morning at 11 am. The cathedral, built between 1816 and 1825, has a classical church design—on a suitably epic scale. The church's facade, with a six-Doric-pillared portico, is based on the Temple of Theseus in Athens; the interior is modeled after the Grecian-Doric style of St. Philippe du Roule in Paris. But the building was never granted full cathedral status, nor has the identity of its architect ever been discovered; the only clue to its creation is in the church ledger, which lists a "Mr. P." as the builder.

However macabre, St. Michan's main claim to fame is down in the vaults, where the totally dry atmosphere has preserved several corpses in a remarkable state of mummification. They lie in open caskets. Most of the resident deceased are thought to have been Dublin tradespeople (one was, they say, a religious crusader). Except for its 120-foot-high bell tower, this Anglican church is architecturally undistinguished. The church was built in 1685 on the site of an 11th-century Danish church (Michan was a Danish saint). If preserved corpses are not enough of a draw, you can also find an 18th-century organ, which Handel supposedly played for the first performance of Messiah. Don't forget to check out the Stool of Repentance—the only one still in existence in the city. Parishioners judged to be "open and notoriously naughty livers" used it to do public penance.