The Gaiety Theatre is located on South King Street in Dublin, Ireland, off Grafton Street and close to St. Stephen's Green. In April 1871, the brothers John and Michael Gunn obtained a twenty-one-year license to establish a new theater. Designed by architect C.J. Phipps, the Gaiety opened on November 27, 1871, with the Lord Lieutenant of Ireland, John Poyntz Spencer, as the guest of honor and a double bill of the comedy She Stoops to Conquer and the burlesque La Belle Sauvage. It specializes in operatic and musical productions, with occasional dramatic shows; the theater is also known for its annual Christmas pantomime and has hosted a pantomime every year since 1874. The Gaiety was extended by renowned theatre architect Frank Matcham in 1883. In 2003, the owners, Denis and Caroline Desmond invested in a sizable restoration project including the installation of an air conditioning system and new seating. The most substantial restorations were undertaken in 2007, including rebuilding the stage, the orchestra pit, and a new and taller tower. The theater retains several Victorian era features and as of 2024 remains Dublin's longest-established, continuously producing theater.