I help organize a yearly event at the Boston Cyclorama building. The building itself hosts about 700 guests, and is designed for art exhibits to be shown on the

I help organize a yearly event at the Boston Cyclorama building. The building itself hosts about 700 guests, and is designed for art exhibits to be shown on the inner side of its perimeter (the building is a huge ring, with a domed ceiling). While I've never seen it used to present a single image, I _do_ know that it was originally built to host exactly that - a 360-degree painting commemorating the Battle of Gettysburg.