The first stage in the building of a "flying saucer" sculpture on the Lancashire hills, is complete.
Work is under way on the lighting on Halo
The artwork - called "Halo" - is part of the Panopticons project to create a series of 21st-century landmarks to mark the area's regeneration.
The second stage of work on Halo, at the former Top o' Slate landfill tip in Haslingden, Rossendale, is beginning.
Wind-powered lighting is being fitted which will illuminate the metal lattice-work at night.
Panopticons is funded by the Northwest Regional Development Agency, the Lancashire Economic Partnership, the Northern Way, Arts Council England North West and Lancashire County Council.
All the structures are built as shelters, viewing platforms or beacons.
Halo is a 18m-diameter steel lattice sculpture, supported on a tripod. The core is open at the top, framing views of the sky.
Organisers say the Halo's lighting will create a "subtle glow".
The low-energy LEDs will be powered by an adjacent wind turbine providing a renewable source of power.
Carolyn Wilkins, chief executive of Rossendale Council, said: "Halo is a unique and distinctive landmark for Rossendale which will help put the borough on the map."