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I painted some orange tones on the flares to give some vividness. Create two new layers. One front flare layers with light color # f2ecc6 (layer Opacity: 27%) with dark color # f2d9b1 (layer Opacity: 15%) behind the flares (Soft Round Brush, Size: 500px, Opacity: 100%). Try make that brush center and flare match, then the form will be better.
Create a new layer. Take Polygonal Lasso Tool (L) and draw a shape similar to a wrong crystal or just a way of movement of the sun rays (Sun - roof of left tower - right towers - sun). Fill this figure with color #ffedba, deselect it (Cmd/Ctrl + D). Go to Filter > Blur > Gaussian Blur... Set Radius: 200px. Done! Set Opacity for this layer 40%.
We make the rays of the sun by using Photoshop filters. Fill black color a new layer. Go to Filter > Render > Fibers. In dialog box set Variance: 20, Strength: 20 and click OK.
Rotate this layer on 39 degrees (Cmd/Ctrl + T or Edit > Transform > Rotate). Set Blending Mode "Screen" and Opacity: 15%. Add a layer mask and with soft brush remove all except the space in the center of the image, where we did the incident light. A little more to add to the mountains and the sky (just do not overdo it).
All layers of the sun safely hidden in the yellow group with same name :). It remains to improve the clarity of small details and do a little color correction.
Please make the correction of noise and sharpness. You have two options for how to do it. You can merge all the layers now (Cmd/Ctrl + Shift + E) (without the possibility of returning to the layers. In this case you will have to make a duplicate of this layer) into one or duplicate them (Cmd/Ctrl + J), and then will merge it (Cmd/Ctrl + E). In any case (I chose the second option) convert layer for Smart Filters and add Filter "Reduce noise".
And add a second filter - "Sharpen" (Filter > Sharpen > Sharpen...). Nothing happens, but in Layer panel, on this layer appears "Sharpen". Make double-click on settings icon on the right-side; in window, that appears, set Opacity: 55%.