What is the definitive guide to uncovering Sintra's hidden secrets according to Nick Robinson?

According to my experiences, uncovering Sintra's hidden secrets involves exploring its various historical sites and immersing oneself in its rich history and legends. Here are the nine incredible sites I recommend:

• Pena Palace: An iconic 19th-century Romanticist castle.
• Moorish Castle: A 9th-century fortress with epic views.
• Quinta da Regaleira: Home to the legendary Initiation Well.
• Monserrate Palace: A blend of Moorish, Gothic, and Indian styles.
• Sintra National Palace: A medieval royal residence with twin chimneys.
• Cabo da Roca: The westernmost point of mainland Europe.
• Convent of the Capuchos: A Franciscan monastery hidden in the woods.
• Seteais Palace: A neoclassical palace with a ghostly past.
• Chalet of the Countess of Edla: A romantic 19th-century retreat.

Remember, Sintra is a maze of winding roads, so it's best to ditch the car, wear comfy shoes, and embrace the adventure! Would you like more details about any of these sites?