Standing at the corner of Tay Street and Marshall Place (both part of the A989), the building, a former engine house and water tank, has been the home of The Fergusson Gallery, displaying the work of John Duncan Fergusson, since 1992.

[2] Clean water was drawn from filter beds on Moncreiffe Island, in the adjacent River Tay, and pumped beneath the river, by a steam engine, into a 146,000 imperial gallons (660,000 L; 175,000 US gal) holding tank in the building's rotunda.

[2] The engine house has a tall Doric columned chimney, capped by a Roman urn (a fibreglass replica of the original, which was destroyed by a lightning strike in 1871).

It was restored in 1973, for use as a Tourist Information Centre, by James Morris and Robert Steedman, and then converted to its current use nineteen years later.

Its dome was reconstructed in 2003 as part of a restoration funded by the Heritage Lottery, Historic Scotland and Perth and Kinross Council.