A port, in the context of a place, is a designated area, typically a part of a coastal or riverine landscape, specifically structured and equipped to accommodate boats and ships. This establishment, sometimes referred to as a marina harbor or commercial dock, serves various purposes including but not limited to, allowing vessels to load and unload cargo and/or passengers, refuel, carry out maintenance and repairs, and find shelter from harsh maritime conditions. Ports are commonly laden with necessary facilities such as cargo handling equipment, fueling stations, repair shops, and amenities for crew members. Larger versions of these ports may also have customs and immigration facilities. In the case of a marina, it might additionally include supplies for smaller, personal boats and yachts including storage services, sales outlets, and sailing schools. Ports play a significant role in global commerce and local economies, facilitating a large percentage of international trade and providing employment opportunities.

1. Port of Long Beach, California: Known to be the second busiest container port in the United States, it's a hub for cargo vessels, as well as private and charter boats. 2. Marina Bay Sands, Singapore: While mostly known for its iconic hotel, it also houses a state-of-the-art marina attracting luxury yachts from all around the globe. 3. Port of Monaco: A popular port in the Mediterranean, it's often filled with luxury yachts and commercial cruise liners. This stunning marina is located at the base of the palace of Monte Carlo. 4. Sydney Fish Market, Australia: While not a traditional marina, this commercial dock is a hive of activity for fishing boats bringing in daily catches to this world-famous seafood market. 5. Pier 39, San Francisco: This bustling bayside pier operates both as a commercial dock for ferries and cruise ships, but also hosts private yachts and sailboats. It is easily one of San Francisco's most visited attractions.

Port Sultan Qaboos, located in Mutrah district in Oman's capital city, Muscat, was initially built in 1974 as a central hub for the country’s commercial and maritime activities. However, in a transformative move in 2014, the port was changed into a beautiful marina harbor dedicated to cruise ships and tourism. Now, this stunning seaside development beckons as a picturesque gateway to Muscat, offering a plethora of dining, shopping, and leisure experiences. Port Sultan Qaboos also holds the record for receiving the largest cruise ship 'MS Queen Mary 2' in the Gulf Region indicating its substantial importance to the global maritime tourism industry.