In the early 1850s the arrival of the railway changed the landscape of the western boundary of Grantham forever. The railway continually evolves, so there probably would not be a year in the past 160 years when there hasn't been some kind of changes to the buildings, the track layout or the infrastructure. Until the 1930s the themes were generally expansion, to cope with growing traffic, and upgraded facilities to permit the application of new technology in motive power, track or signalling. Later in the 20th century rationalisation took place as road transport using the new motorway network captured most general freight traffic. Higher speeds demanded the removal of many junctions. Older buildings became unsuited to modern needs and were removed or replaced.
Grantham station is today a fascinating blend of the old and the new. If you know where to look you can see features dating from 1852. Most of the buildings on the London-bound platform date from the 19th century, but you will buy your coffee from a kiosk designed in the 21st. Across the main lines, passengers using platforms 2, 3 and 4 await the arrival of their services in facilities built in the 1980s.
The next change is almost certainly being planned as you read this page…