I'm submitting two--a simple, clean edit and a BW conversion. Great image, Peter. It was fun to work on. I think I need to think more outside the box like some of the previous posters!
Anyhow, I used Lightroom 5 and Photoshop CC and Nik Silver Efex.
For the first edit, I just did my usual small bump in clarity, contrast, vibrance, and sharpness in Lightroom. Did a gradient filter with low exposure from both top corners to bring the sky back and brushed on a little bit of extra exposure on the statues' faces.
In Photoshop, did a clean, simple pop by adding a bit more contrast, a gradient spotlight, and midtone boost in curves. Brushed on a bit of punch in the flowers, statues, and text with a layer mask in levels and another layer mask to boost color with the channel mixer (red +150, green -25, blue -25). Somewhere in there I brushed on a little unsharp mask to add a little crispness to the statues.
For the second edit, I started right where the color edit left off and added a filter in Nik Silver Efex Pro--I used the preset no. 5: High Structure (harsh) with selenium toning added. After the filter had been applied, I brushed on a little darkness at the bottom of the image with a layer mask in levels.
I think I need to take better note of what I'm doing next time. I didn't save a PSD file, so I'm trying to recreate my steps from memory. Duh.
EDIT: Thanks, Peter! That was just what I needed. I somehow missed that "Option" button. Thank you, thank you!