This impressive museum of marine sciences is the perfect place to spend the day with children. Not only is the building itself incredibly attractive — rising from the side of the Monaco cliffs in consistent splendor — it is home to vast sea fauna collections, and its exhibitions, which last for varying amounts of time, are unique and insightful. Major cruise ships also dock here; quite the sight when some can measure up to meters in length. Hercule Harbor, Monaco, France. Each day at AM on the dot, this modest-in-size but not lacking in pageantry ritual takes place.