Every Tuesday and Friday between 10am and 2pm, you can purchase a special priced ticket (€8.00) which allows entrance into 5 museums and historical buildings in La Oliva, collectively known as the Route of the colonels (Ruta de los Coroneles), a tour showcasing the historical importance of La Oliva.
The ticket includes entrance to:
1) Casa de la Cilla
2) Iglesia de la Candelaría
3) Casa de los Coroneles
4) Centro de Arte Canario (Casa Mané)
5) Casa del Coronel
More information can be found here (in Spanish)