The Union Canal now ends at Lochrin Basin, which is being re-developed, a joint initiative by British Waterways and Miller.

However in it's heyday there were a number of other basins in Edinburgh, and the canal used to continue north from it's current terminus, then east to Port Hopetoun basin beside Lothian Road.
The The map above shows the full extent of the original basins. 

On the right the corner of Fountainbridge and Lothian Road in March 2002, this building has stood here since 1922, when Port Hopetoun was drained and used for development. 

Towards the right of this picture, at the center of the east facing facade, are windows in relief from the rest of the frontage. 

If you look very carefully between the first and second floor windows the builders have left a reminder of the previous use of this stretch of Lothian Road.

Photograph: James Gentles

The relief celebrates the canal history of the site, with the words:

"Here stood Port Hopetoun 1822-1922".

Photograph: Roy Brown