Royal Gardens of Europe: Great Restorations
Without a doubt, many of today's impressive royal gardends would not be on display without the tremendous work of restoring and preserving the centuries-old gardens.
Here are a few the author recommends:
Hampton Court - London, England (the supreme Royal Garden, as proclaimed by the author)
Het Loo - Apeldoorn, The Netherlands (garden completely destroyed, then completely restored)
Isola Bella - Lake Maggiore, Italy
Charlottenburg - Berlin, Germany ("considered by many the greatest braoque palace and garden composition")
Beloeil - Brussels, Belgium
Again, the book is Royal Gardens of Europe by George Plumptre.