The Natura Rerum is an inn, or as their sign would have it, hotel, located in the city of Kerack. It is described as a small but tasteful cedar building having a sloped roof with a large chimney. The entrance is comprised of a wide staircase lined with aloes in wooden planters. Geralt compared the aromas emanating from the place to Eden or Cockaigne. The maître d'hôtel is Febus Ravenga.
- Febus Ravenga, maître d'
- Tarp, bouncer