This project started with a total of 20 individual images. Each of the four photographs below is a 5 shot exposure bracketed sequence HDR merged in Adobe Lightroom with no further work done to them

Those four images were then merged together as a "panorama merge" in Adobe Lightroom resulting in the image below.

I then cropped the image slightly and did basic develop adjustments plus some colour toning in Lightroom to get to this.

From there I went into Adobe Photoshop to add the some final PS magic and finishing touches. 

"Hey Voila" as Serge Ramelli might say.