TT Grandstand including the startline, pit lane, depot and scoreboard for the Isle of Man TT and Manx Grand Prix Races is situated on the A2 Douglas to Ramsey road in the town of Douglas in the Isle of Man.
For the 1920 Isle of Man TT Races, changes were made to the Snaefell Mountain Course and competitors now turned left at Cronk-ny-Mona and followed the primary A18 Mountain Road to Governor's Bridge with a new start/finish line on the A2 Glencrutchery Road which lengthened the course to 37¾ miles. The startline for the 1911 Isle of Man TT Races was originally situated on the level section of the A2 Quarterbridge Road between Selborne Drive and Alexander Drive in the town of Douglas. The startline and refuelling area was moved to the top of Bray Hill for the 1914 Isle of Man TT Races and then moved in 1920 to the Nobles Park area of the A2 Glencrutchery Road with the junction with Greenfield Road in Douglas. For the 1926 Isle of Man TT Races the startline section of the A2 Glencrutchery Road was subject to road widening and the building of grandstand complex for the cost of £2,000. After the Bradford City Fire Disaster in 1985, due to safety concerns the wooden TT Grandstand was demolished and replaced with a modern purpose-built brick design incorporating a wider pit-lane for the 1986 Isle of Man TT Races.