Promenade
Promenade /ˌprɒm.əˈnɑːd/ US /ˌprɑː.məˈneɪd/ (noun)
a path on the seashore for walking, walkway, path, sea front, boardwalk, prom, walk for pleasure, stroll, marching dance movement, to walk or stroll for pleasure:
The rise in sea level reaches the promenade when the tide is in due to the phenomenon of global warming.
Lying on promenades, I tanned and took some vitamin D which suffices for my health.