Sydenham is a district in southeast London, in the modern boroughs of Lewisham, Bromley, and Southwark. In the 19th century, the Crystal Palace was relocated to Sydenham Hill after the closing of the Great Exhibition.

In London Labour and the London Poor edition: 

Phase 1

London Considered as a Great World. (The Great World of London): "If then, by some volcanic convulsion - some subterranean quake and explosion - the earth were suddenly to burst, like a mundane bomb, and, being shattered into a score or two of terroid fragments, the great Metropolis were to be severed from the rest of the globe, London is quite large enough to do duty as a separate world, and to fall to revolving by itself about the sun - with Hampstead and Sydenham for its north and south poles, doomed alike to a six months' winter - with the whole line of Oxford Street, Holborn, and Cheapside, scorching under the everlasting summer of what would then be the metropolitan torrid zone, and whilst it was day at Kensington, night reigning at Mile End."

A Visit to the Cholera Districts of Bermondsey (Morning Chronicle): "n the days of Henry II, the foul stagnant ditch that now makes an island of this pestilential spot, was a running stream, supplied with the waters which poured down from the hills about Sydenham and Nunhead, and was used for the working of the mills that then stood on its banks."

Phase 2

Acrobat, or Street-Posturer. (Volume 3)