Features included gravelled pathways, lawns, trees, flower and shrub borders. In 1928 it was surrounded by a lilac hedge and had lawns, tennis courts, shrubberies and fine trees. Now enclosed by modern railings, the original layout of serpentine walks survives with some mature London plane, oak, horse chestnut and shrubs. Camden Council took over management in the 1950s and built an adventure playground on the tennis courts site and later a play centre. The square was home to a Climatological Station, founded by George Symons, former president of the Royal Meteorological Society, and to many artists.