The historical present is used when the moment is being presented as a reenactment. The important part of that approach is to limit the knowledge presented to the point in time the moment is being staged.
For example, when the Elgin Marbles were being crated up on the acropolyis, your exhibit could portray Lord Elgin reflecting on the historical import and the great history the pieces represent. But he should remain mute on the subject of appropriation, since that is a modern notion and not something a 19th century Englishman would likely thought about. He might reflect on the ever glorious British Empire and its fate to eventual rule the entire world, if Lord Elgin ever thought ideas like that. The audience would see the counterpoint to the current United Kingdom.