Even on a tight schedule, Santorini Arts Factory (Tomato Industrial Museum) earns the hours.
Allow 45–60 min.
An offbeat, genuinely interesting small museum about the canning industry that once defined Santorini's economy, set in an atmospheric old factory. The catch is it's niche — charming if you like industrial heritage and local history, forgettable if you just want views. A good rainy-day or beach-break pairing with Vlychada.