Exploring Castel del Monte typically takes around 45 minutes to an hour for a thorough visit. The castle's interior, including the main rooms and courtyard, can be fully appreciated within this duration. There are two floors, each featuring eight rooms, and an octagonal courtyard at the center, allowing for a concise yet comprehensive experience. Visitors can admire the craftsmanship, ancient engineering feat of the unique octagonal design, vaulted ceilings, and architectural details within this timeframe.