There are sculptures and monuments in the public areas, the gardens of public and private buildings and private residences in the cities that we live in. These works of art face severe pressure due to rays of the sun, heat, humidity, gases that can easily transform into acids after interacting with water (such as CO2, SO2, NOx), solid particles carried over by birds and wind and human activities. Thus, they can be damaged due to these different pressure sources. Preventive conservation is a good solution for conservation the works of art. However, the deteriorations that occur in outdoor sculptures due to environmental impacts may be so intense that they preventive conservation applications may not be sufficient. In such cases, it is necessary to apply active conservation methods. Therefore, the conservation of outdoor works of art may be possible only by applying active and preventive conservation in coordination as part of the long-range maintenance plan. Information will be provided in our study on long-range maintenance planning that should be carried out for conserving outdoor sculptures, stages of preventive conservation, fundamental preventive conservation suggestions and primary active conservation methods. In addition, discussions will also be carried out regarding who should apply the preventive and active conservation methods in order to ensure that the works carried out for the conservation of the works of art are successful.
Keywords: Preventive conservation, active conservation, long-range maintenance plan, condition survey