This charming day trip from Sibiu visits the whimsical Clay Castle of the Valley of the Fairies, a fairytale-like complex built entirely from natural materials such as clay, sand and straw, looking like something from a storybook. Often combined with other quirky attractions such as an upside-down house, the tour offers a fun, family-friendly outing amid the Transylvanian countryside, with a guide to explain the eco-friendly building and the local legends. Delightful and unusual, it is a lighthearted and memorable excursion, especially popular with families and lovers of the offbeat.