List of international tools concerning historical gardens
Council of Europe
NGO
Other networks, actors of civil society
- Europäisches Gartennetzwerk – EGHN
- Network of European Royal Residences
- European Historic Houses
- Jardins botaniques de France et des pays francophones
- GardenHistory.com
- Fondazione Benetton Studi Ricerche
- Preussische Schlösser und Gärten Berlin-Brandenburg
