First the primary exposure of three for HDR processing. This is straight out of my camera. I used a Sony a6000 here.
Untouched from the camera
Then I combined three photos. Normally I would would use Photomatix, but I went with Pro HDR X on the iPad for this one.
HDR composite with some tuning
Not bad, but the sky is boring. And there's some distractions like the tank topped tourist walking into the frame. So I used Touch Retouch to erase the tourist.
Then I used the same app to erase the parked cars.
The sky needed a few clouds, so I used Adobe Photoshop Mix to add a sky from another photograph.
I then used Snapseed to boost the color and brighten up the dark areas, sharpen things up, and clean up a few more areas.
A before and after comparison