Praça de Pedro IV, commonly known as Rossio, is Lisbon's vibrant central square. Featuring distinctive wave-pattern cobblestones, it's adorned with a towering column of King Pedro IV and two baroque fountains. The square is flanked by the neoclassical National Theatre and historic cafés. A hub of activity since medieval times, Rossio offers a perfect blend of history, culture, and lively atmosphere, making it a must-visit destination in Lisbon's heart.