2Pena Palace, Portugal

Perched atop a hill in the Sintra Mountains, the Pena Palace is a Romanticist castle that looks like it’s straight out of a fairy tale. King Ferdinand II transformed a ruined monastery into this colorful palace in the 19th century, blending Gothic, Manueline, Moorish, and Renaissance elements into a breathtaking whole. The palace is surrounded by the Pena Park, a vast forested area with over 500 different species of trees from around the globe, offering a serene escape into nature.