King’s Cross is the largest urban redevelopment scheme in Europe, and the rich industrial heritage of the area is integral to its renaissance. Among the most distinctive and beautiful features to be retained is the triplet of Grade II-listed, cast iron gasholder guide frames which were originally constructed in 1867. The triplet was abandoned as heavy industry moved to the outskirts of the city and was dismantled in 2001 to allow for the construction of the Channel Tunnel Rail Link.