Complex sentence: Grand Duke Ferdinand III decided to capitalize on the air of overgrown wildness; in 1828 it was decided to demolish the villa, and the garden was then re-designed in the Enlish landscape manner and became one of the most romantic gardens ever seen in Tuscany.
Split into simpler sentences: Grand Duke Ferdinand III decided to capitalize on the in 1828 it was decided to demolish it. The garden was then re-designed and became one of the most romantic gardens ever seen in Tuscany.