There was once a time when a ticket, like the one above, would gain you access to a live theater dissection, like the one below. 

Pictured, students at Jefferson Medical college crowd into the bleachers of a lamplit amphitheater to witness the slow disassembly of a cadaver. The room in which they sat became known to students as ‘The Pit’ during its day. 

Notice how the surgeons and anatomists of the 19th century wore three piece suits in the theater rather than our more familiar gowns and gloves.