Monaco
Monaco's actual Sea Wall - https://twitter.com/InterestingsAsF/status/1672630348545507329
Monaco does not have a designated capital city; it is a city-state where the country and city are the same. The capital is officially referred to as Monaco, though Monte Carlo is its most famous district and often mistakenly cited as the capital due to its association with the casino and glamour. The historic and administrative capital, housing government buildings like the city hall, is in Monaco-Ville.