April and October:
Tuesday to Sunday 9 a.m. to 5 p.m.
May to September
Tuesday to Sunday 9 a.m. to 6 p.m.
November to March:
Saturday and Sunday 9 a.m. to 5 p.m.
Monday ONLY on public holidays
For groups: from 20 people all year round
(also outside of the opening times) with advance notice!
You can find the Heldenberg opening times here