Holy Trinity Church stands on Church Road in Nuwara Eliya, built between 1845 and 1852 by soldiers of the 15th Regiment and consecrated by Bishop James Chapman. Designed in Early English Gothic style by Captain Nelson of the Royal Engineers, it remains an active Anglican parish under the Church of Ceylon. The surrounding graveyard holds colonial-era tombstones, including relatives of explorer Samuel Baker and the wife of Governor Andrew Caldecott. Queen Elizabeth II attended a service here in 1954, and the church was declared a protected archaeological monument in 2007.
Construction began on 5 May 1845 after a committee led by Reverend Hermann von Dadelszen and colonial officers set a budget of 900 pounds. The 15th Regiment carried out the seven-year build under Major James Brunker, and Bishop James Chapman consecrated the finished church on 24 February 1852. The congregation enlarged the building in 1889, still visible today in differing corbel sizes along the nave. Memorial plaques inside honor Ceylon-era planters and officials, including the father of Admiral Lord Fisher, while the churchyard holds tombs connected to Samuel Baker's family. A century-old pipe organ was restored in 2001, and the site was formally protected as a national monument in 2007.