1. Cascais was a favored retreat for Portuguese nobility and artists during the late 19th century, leading to the establishment of numerous charming palaces and gardens that still attract visitors today. 2. The city is home to the Boca do Inferno, a dramatic cliff formation where waves crash into the rocks, creating spectacular natural displays and attracting tourists and locals alike. 3. Cascais has a rich maritime history and is known for its sailing culture, hosting several international sailing events, including the annual Cascais Sailing Week, which draws competitors from around the world.