Hard to choose just one. I like the two tower, apartment and hotel complex downtown and would like to see it come to fruition. Hopefully a Ritz-Carlton will be included.
Also there are a couple of other large multi-tower projects expected to be revealed soon. The Metro Development and Housing Authority has requested proposals for development of several properties in SoBro.
One proposal which apparently was rejected early on has been leaked on-line...
I expect the selected proposal(s) to have a little more density.
There should be details regarding the Lifeway Campus which consisted of several square blocks on the edge of downtown where the Southern Baptist Convention had its national headquarters. Rumors hint at several towers for office, hotel and residential being built.
Then there have been published reports of investors shopping around for tenants for a single tower in the Gulch which private renderings were claimed to show a 50 story building.
I know this seems outrageous, but it's all happening for reasons I can't really fathom. Nashville is hotter than a firecracker development-wise. It is undergoing a transformation rarely seen in the USA.
The below rendering was done by a local Architectural firm to show proposed and under construction development in the light, transparent grey renderings. I added several recently announced projects in yellow. This view does not include the Mid-town, Music Row, West End area which has about 10 buildings, 10 to 25 stories proposed or scheduled to start soon.