“Under the Surface” tours focusing on traditional timber frame construction techniques are to be run again by the Weald & Downland Open Air Museum this winter.

The museum, based at Singleton in West Sussex, successfully attracted architects, surveyors, conservation professionals, planning officers and history enthusiasts when it ran the courses last year.

The tours, led by museum director Richard Harris, offer an insight into construction techniques used in the museum’s collection of 17th-19th century buildings.

It also examines the design of the £1.8m Downland Gridshell, the UK’s first timber gridshell structure, which is home to the museum’s conservation centre and rural artefacts collection.

Tours run from November 12 until February 25, 2004.