This spring, the Old Royal Naval College in Greenwich is offering “ceiling tours” of its Painted Hall. The English artist James Thornhill decorated the hall between 1708 and 1727, receiving a further commission to create works for the dome of another Christopher Wren-designed building in London, St Paul’s Cathedral. Conservators are currently treating the hall, which is covered in 3,400 sq. m of paintings, as part of a refurbishment project that includes a new visitor centre and café. From April, visitors can watch the conservation, thanks to the installation of a lift. Around £2m is still needed to complete the £8.5m revamp.