St Canice's Cathedral & Round Tower

This was built as a catholic cathedral, caved in and was rebuilt in the 13th century, but the 9th-century Round Tower indicates its much longer history. It's Ireland's second-largest church, surpassed only by Dublin's St Patrick's, of similar date and style. Cromwell trashed it through force of habit and used it as stables for his horses, but it was rebuilt from the 19th century, retaining many medieval features, and is nowadays Anglican. The tower, outside in the graveyard, can be ascended by adults up steep ladders.