Several legends are associated with the castle, the most significant is about Vlad The Impaler (Dracula). It is believed that he was imprisoned here for 7 years. This may be true or not, in any case tourists like the legend :)
Find opening times and the ticket price on the official website.
Getting there: free parking is available on the road near the castle N 45 45.036 E 22 53.342. Without a car, it's problematic to get there, as Hunedoara located off the main roads. The easiest way is by train to Deva or Simeria, find schedule here, then by local bus to Hunedoara. Buses leave every 20 minutes from the train stations in Deva and Simeria. Take a taxi for $2 from the bus station Hunedoara to the castle and back.