The most visited attraction in the area around Cascais is the forbiddingly named Boca do Inferno (Mouth of Hell), one of several natural grottoes in the rugged coastline, and just 2 km (1 mi) west of Cascais. It's best to visit at high tide or in stormy weather, when the waves are thrust high onto the surrounding cliffs. You can walk along the fenced paths to the viewing platforms above the grotto and peer down into the abyss. A path leads down to secluded spots on the rocks below, where fishermen cast their lines. Afterward, shop for lace, leather items, and other handicrafts at roadside stalls, and stop in one of the nearby cafés.
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