Here's my take-
1) Brightened highlights, darkened midtones and shadows in the RGB channel of curves
2) Second curves layer- reduced the cap on highlights in the red channel, boosted red midtones to make the chandelier pop
3) Cropped to remove most of the sky and the brick building and keep the whole background blue tinted
4) Copy/pasted the image and its mirror into a new document, lined them up and cropped the excess space