People were strolling on the esplanade in front of the fortress, enjoying the evening breeze.

esplanade 来自法语，指"宽阔的散步道"或"海滨大道"，通常指沿海或河边修建的平坦开阔地带，供人们散步休闲。这个词特指那种风景优美、适合漫步的公共步道。