Complex sentence: The inner rooms are richly decorated with Neo-Manueline portals and stucco work imitating Manueline rib vaulting, being also an important showcase of Portuguese painting and sculpture of the early 20th century.
Split into simpler sentences: The inner rooms are richly decorated with Neo-Manueline portals and stucco work imitating Manueline rib vaulting. The interior decoration is also a showcase of Portuguese painting and sculpture of the early 20th century.