Bumi Parahyangan promotional poster and brochure by Rittsu, at Behance. Triangles don't seem to be popular shapes to use in graphic design, but Rittsu executes them well here. Notice the subtle arrows pointing right to persuade the viewer to read on.
The color back grounds frame birds and flowers. For the larger, one-day events, (basically The happening monthly) I like the idea of having a similar event flier design with slightly different features based on the neighborhood, time of year, etc.