Two men who are creating a landmark in the East Midlands have been given the Freedom of the City of London.
The solar pyramid is due to be completed in the summer of 2006
The 200-feet-high (60m) sundial is being built near the M1 in Chesterfield. It will be one of the UK's largest works of art.
Richard Lester-Swain and Adam Walkden, both from Matlock, designed the solar pyramid on the hill where the Markham Main colliery once stood.
They were honoured in a ceremony at London's Guildhall on Friday.
Richard Lester-Swain said: "Because of our involvement in advancing the science of Horology (clock-making), albeit on a grand scale, we were invited to put ourselves forward to become members of the Worshipful Company of Clockmakers, the oldest guild of clockmakers in the world, to which we were admitted in January this year.
"The guild then proposed that we should be given the Freedom of the City of London in recognition of our work and achievement with the Solar Pyramid."
When it is completed it is expected to be more than twice the height of the Angel of the North and will be seen by an estimated 40,000 motorists an hour on the nearby M1.
The £1.2m structure will be powered by its own solar cells.
Made of three polished stainless steel towers, the structure will cast a shadow across a 60-metre base marked out to trace both time and the rotation of the earth.
Work on the solar pyramid is due to be completed in the summer of 2006.