Complex sentence: After the exhibition, it was decided to relocate the Palace to an area of South London to be rebuilt on Penge Common, at the top of Penge Peak next to Sydenham Hill, an affluent suburb of large villas.
Split into simpler sentences: After the exhibition, it was decided to relocate the Palace to an area of South London known as Penge Common. It was rebuilt at the top of Penge Peak next to Sydenham Hill, an affluent suburb of large villas.