Lightroom - Add Texture to Architecture/Buildings

Adding Clarity to buildings/architecture is a great way to make textures stand out. The Clarity slider sits in the Basic Panel of the Develop Module. Moving the slider to the right increases edge contrast, and gives a more gritty look. The effect works particularly well when applied to any sort of architecture, whether that be inside or out. 

How much Clarity to add is very much down to each photo. RAW photos, in particular, can take more clarity without the effect starting to create harsh lines and halos around objects.