Tucked quietly between Switzerland and Austria, Liechtenstein is a doubly-landlocked principality that feels like a private mountain sanctuary. Its capital, Vaduz, is watched over by the iconic Vaduz Castle, the hilltop residence of the royal family that offers sweeping views of the Rhine Valley. While small in scale, the country is a powerhouse of culture and outdoor adventure, featuring the world-class Liechtenstein Museum of Fine Arts and the pristine hiking trails of Malbun. Travelers can walk the "Liechtenstein Trail," a route that spans the entire country in just a few days, crossing through flower-filled meadows and past medieval ruins like Gutenberg Castle.