Sage, mint, lovage & co. grow in a bed in the upper castle courtyard. The small herb garden with 23 different plants is located near the entrance to the historic youth hostel. The approximately 26 square meter square is enclosed by graywacke stones. Guests at Burg Altena will find familiar kitchen herbs there, such as parsley, savory or chives. But there are also medicinal herbs such as St. John's wort, mullein and lady's mantle. If you are not familiar with the name "yellow-leaved thistle", the Latin name may help. With "Origanum vulgare Aureum" also the friends of Italian pizza will be able to do something. The names of the plants are written on slates. Not only visitors to Burg Altena benefit from the herb bed, but the adjoining restaurant also uses the herbs for its cuisine. In addition, the museum's educational department offers "herb tours", "making ointments and oils" or "cooking like in the Middle Ages".