Metal sculptures in urban environments face constant exposure to pollution, which can lead to corrosion, discoloration, and structural damage. To preserve these artworks, several effective strategies can be employed.

1. Protective Coatings: Applying specialized coatings like wax, lacquer, or epoxy resins creates a barrier against pollutants and moisture. Regular reapplication ensures long-term protection.

2. Regular Cleaning: Gentle cleaning with pH-neutral solutions removes dirt, grime, and acidic deposits. Avoid abrasive tools to prevent surface damage.

3. Corrosion Inhibitors: Using anti-corrosion sprays or treatments slows oxidation, especially for iron or bronze sculptures.

4. Proper Placement: Positioning sculptures away from high-traffic areas or industrial zones reduces exposure to harmful emissions.

5. Routine Inspections: Frequent checks for early signs of wear allow timely repairs, preventing extensive damage.

By combining these methods, metal sculptures can withstand urban pollution and remain visually stunning for years.