Dozens of fire fighters battled throughout the night to put out a blaze at an abandoned mill.
The Hermitage Mill in Mansfield was engulfed in flames last night, prompting 20 fire engines to be rushed to the scene.
Fire fighters from across Nottingham were called to the fire at around 3am, the Nottingham Post reported.
Incident commander Bryn Coleman, of Nottinghamshire Fire and Rescue Service, said the fire had been contained come sunrise.
Parts of the mill have collapsed.
The Robin Hood Railway Line, which runs from Nottingham to Worksop, remained open this morning, but a large stretch of road was shut.
He said: "We've had 20 fire appliances from across Nottinghamshire and Derbyshire in attendance, plus a high volume pump from South Yorkshire and two aerial ladder platforms.
"As you can see behind me now, the fire has been contained, it has been surrounded.
"There's still an impact to the wider community at this moment in time, particularly around the Hermitage Lane area. Fortunately the Robin Hood Railway Line, which runs adjacent to this building, has still remained open.
"We're working currently with our partners, with Nottinghamshire Police, to try and get the remaining businesses in the area open because we're aware of the impact on the businesses of the closures."
Chief Inspector Paul Hennessy, of Nottinghamshire Police, urged people living nearby to close their windows due to the smoke.
He said there were no plans to evacuate residents.
Firefighters from Derbyshire and South Yorkshire had also been called on to help tackle the flames.
The mill was due to be converted into 32 new homes and 25 flats, a coffee bar and heritage exhibition space.
It is one of the oldest buildings in Mansfield and was built around 1790 by the fourth Duke of Portland out of sandstone.
Anyone with any information is asked to call Nottinghamshire Police on 101, quoting incident 66 of March 28.
