The Belém Tower, or Torre de Belém, is a historic fortress located in Lisbon's picturesque neighborhood of Belém. Built in the 16th century, this magnificent structure was once a royal residence and later served as a defense tower against invaders. With its imposing stone walls and battlements, the tower stands out as a symbol of Portugal's rich history and cultural heritage. As visitors approach, they are struck by the intricate stone carvings and ornate architecture that adorn the exterior, while the interior reveals stunning examples of Manueline-style decoration.