In the center of the room stands what looks like an enormous playground slide, almost 12 feet tall and 21 feet long, displaying a small section of a 184-foot-long parchment scroll with depositions from the early 14th-century heresy trial of more than 200 Knights Templar.
WSJ: Lux in Arcana | Capitoline Museum | The Papacy's Private Papers | By Francis X. Rocca