We were in Sydney last weekend and I managed to catch some of the Biennale and Sol Lewitt's retrospective at the Art Gallery of NSW. Sol Lewitt died in 2007, but a lot of this show includes recreated wall drawings that are made from specific detailed instructions Lewitt left for assistants and galleries to make these works. Lewitt explains this process in a 1967 essay where he wrote: 'In conceptual art the idea or concept is the most important aspect of the work’ . The drawings are made with thousands of lines some creating planes of the most magnificent colour (as above). Sol Lewitt is showing at the the Gallery until August 3rd.
Wandering through Sydney after the gallery I was drawn to all things geometric in the city including the traditional giant chess game in Hyde Park. 
http://www.artgallery.nsw.gov.au/media-office/sol-lewitt-exhibition/

I've been making a series of pastel drawings lately. Just experimenting with the medium. I usually use watercolour and ink for drawing, but I do like the sort of alive look the pastel seems to have after I have scratched back into it with a knife.
There are a few more pastels on the "Drawings" page on my website.