This is Dubai Creek, which runs through the centre of the city:
It's been extended many kilometres and new developments, such as Festival City, Business Bay have been built on the new section.
The plan was to take it in a giant loop to rejoin the Gulf in Jumeirah, some kilometres from the city.
But work stopped two kilometres from where it was to rejoin the Gulf. The problem was the final section had to cross three major roads including the main freeway, Sheikh Zayed Road, which is a twelve-lane dual carriageway. It also had to somehow cross the new Metro line which runs parallel to Sheikh Zayed Road.
The answer they've come up with is what they call "a suspended canal" - in other words, an aquaduct.
They plan to take the last two kilometres over all the stuff that's in the way.
Video accompanying the news shows the Falkirk Wheel in Scotland, so the assumption is that something similar will be built in Dubai.