The construction of the Fort Regent fortress we see today began on 7 November 1806, during the Napoleonic Wars, with the laying of a foundation stone by George Don the Lieutenant Governor of Jersey. The fort was built using local workers and men from the Royal Engineers, with an average of 800 men working at any given time. This enabled the substantial amount of work to be completed 8 years later, in 1814. It was given the name Fort Regent in honour of Prince Regent, who was King of the United Kingdom of Great Britain and Ireland at this time. The design of the fort is credited to Lieutenant-General John Humfrey, and it is thought that Lieutenant-Colonel John Evelegh would have also worked on the final plans. The fort's main features are substantial curtain walls, ditches, a glacis, redoubts, bastions, and redans (or demi-bastions). There was a parade ground in the centre, which is now built upon, and covered with a roof.
During the Occupation of the Channel Islands the German forces made some additions to the fort including flak cannons. Some of these concrete structures remain today. In December 1967 the States of Jersey made a decision to adapt the site into a leisure centre.References:
The Baths of Caracalla were the second largest Roman public baths, or thermae, in Rome. It was built between AD 212 and 217, during the reigns of Septimius Severus and Caracalla. They would have had to install over 2,000t of material every day for six years in order to complete it in this time.
The baths remained in use until the 6th century when the complex was taken by the Ostrogoths during the Gothic War, at which time the hydraulic installations were destroyed. The bath was free and open to the public. The earthquake of 847 destroyed much of the building, along with many other Roman structures.
The building was heated by a hypocaust, a system of burning coal and wood underneath the ground to heat water provided by a dedicated aqueduct. It was in use up to the 19th century. The Aqua Antoniniana aqueduct, a branch of the earlier Aqua Marcia, by Caracalla was specifically built to serve the baths. It was most likely reconstructed by Garbrecht and Manderscheid to its current place.
In the 19th and early 20th century, the design of the baths was used as the inspiration for several modern structures, including St George's Hall in Liverpool and the original Pennsylvania Station in New York City. At the 1960 Summer Olympics, the venue hosted the gymnastics events.