St Margaret's, Lee of the restoration, the church is one of the best preserved examples of a decorated gothic revivalist interior in London. Between 1813-1830 there had been an attempt to rebuild the medieval church, involving the architect Joseph Gwilt. This failed when it became clear that the foundations of the old church were incapable of supporting a new building. The ruins of the original building are in the medieval churchyard on the north side of Lee Terrace. The tomb of Edmond Halley (1656–1742), from 1720 England's second Astronomer Royal and the discoverer of the periodicity of Halley's Comet is in the churchyard,
Royal Hospital Chelsea the Royal Hospital and Ranelagh Gardens as they appeared in 1742. Daily walking tours of the site and museum, led by Chelsea pensioners themselves, can be booked in advance. The South Grounds of the Royal Hospital are also used for large-scale public events including the world-famous Chelsea Flower Show, held by the Royal Horticultural Society. The show has been held in the grounds since 1913, and attracts around 165,000 visitors. Prominently displayed in the grounds next to the flagpole is an inscribed cannon from Singora bearing the seal of Sultan Sulaiman Shah. The cannon was made in Singora around 1623,