Christ Church Cathedral

St Audoen's Church, founded in 1190, is located in Dublin's Old Town. It is the oldest parish church in use in Dublin, a rare example of medieval architecture in Dublin. In 1825 the church building was in a state of ruin, parts of the church were closed or roofless. The architect Thomas Drew was the first to draw serious attention to the architectural and historical importance of the church in 1866. In 1826, the seventeenth-century tower was remodelled by Henry Aaron Baker, but it was not until the major restoration in 1982 that the tower was secured. A Catholic church of the same name is located next door.

The Church of the Immaculate Conception, also known as Adam and Eve, is a Franciscan church built between 1834 and 1889. The church was built after the Catholic emancipation of 1829. In the days of hiding, the Franciscan friars of Dublin discreetly said mass at the tavern of Adam and Eve, hence the popular name of today's church. The church was designed by architect Patrick Byrne, who had planned a tower at the entrance to Merchant's Quay. However, due to financial problems, the church was built without a nave or tower. The church was originally dedicated to Saint Francis but in 1889 it was rededicated to the Immaculate Conception of Our Lady.

St. Patrick's Cathedral, built in the 13th century, is the seat of the Anglican Church of Ireland. The building stands on a former place of worship dating back to the 5th century. The west tower was rebuilt by Archbishop Minot in 1370 after a fire and the spire dates from 1749. In 1666, the Cathedral Chapter donated the Chapel of the Virgin to the community of French Huguenot Protestants who had taken refuge in Ireland. Until 1816, a service was held every Sunday in French by a Huguenot pastor. In the 1860s, a major renovation was necessary, financed by Sir Benjamin Guinness (of the brewery of the same name). As a result of this renovation, many of the walls and decorations date from the Victorian era.