Falkirk Wheel

The Falkirk Wheel is the only rotating boat lift in the world, a sculpture of steel that lifts canal boats 24 metres between two waterways in one slow, silent turn. It joins the Forth and Clyde Canal below with the Union Canal above, reconnecting Glasgow and Edinburgh by water for the first time since the 1930s. The canals had been linked here by a flight of eleven locks that took most of a day to pass; the locks were dismantled in 1933, and by the 1970s both canals were blocked or filled in. The Millennium Link project, funded in part by the National Lottery's Millennium Commission, restored them, and Queen Elizabeth II opened the wheel on 24 May 2002.

British Waterways wanted a landmark rather than a new staircase of locks. The first engineering proposal looked like a Ferris wheel and was rejected as too ordinary. A team led by the architect Tony Kettle of RMJM, working with Arup and Butterley Engineering, produced the present design in three weeks in the summer of 1999; Kettle famously tested the gearing with his daughter's Lego. The two arms, 35 metres across overall, take the form of a Celtic double-headed axe, and the designers also cited a ship's propeller and the ribcage of a whale. The whole machine was assembled first at Butterley's works in Derbyshire, then taken apart and brought to Falkirk on 35 lorries.

The physics are elegant. Two water-filled gondolas, each able to carry up to four canal boats, hang on opposite arms. Because a floating boat displaces its own weight of water, each gondola always weighs the same whether it is full or empty, so the wheel is always in balance and a half-turn takes only about 1.5 kilowatt-hours, roughly the energy of boiling eight kettles. At the top, boats cross a concrete aqueduct and pass through a tunnel and two locks under the line of the Roman Antonine Wall before reaching the Union Canal. Boat trips from the visitor centre ride the wheel up and back.

Getting there

The wheel is at Tamfourhill on the western edge of Falkirk, about 3.5 km from the town centre, in central Scotland between Glasgow and Edinburgh. Edinburgh Airport (EDI) is about 30 km away. The visitor centre sits by the lower basin.