I'm building a hippo pool with a large underwater viewing area (probably 100 X 200 feet, surrounded by viewing windows, tunnel in from below connecting to the rest of the world. I'd like to place a few shops inside this area to draw people in, but for whatever reason I can't get any shops to place. They'll just say obstructed even when the entire building grid is clear, and the path under it was built off a grid on land that was flattened before construction. Also won't let me place them on the mezzanine level of path that I built as the ceiling of the enclosure. I can place a building shell just fine, but not the actual shops. I've had this problem before, trying to place shops directly above an exhibit, and never solved it in that case. I've tried it with the barriers as perimeter and non-perimeter, no effect. Is there a vertical clearance requirement for shops not shown on the building grid? Is there something else I need to do with the barriers? Is it even possible to have shops inside exhibits, even with barriers in place? Can I delete the underlying path and try placing them then? (Of course, now that I'm posting this, getting new ideas). I'll cut myself off here and wait for responses. Thanks in advance!