Futuristic coastal city on an alien world with three moons

A sprawling and futuristic city on a planet with three small moons off the horizon. The city is made of gleaming, tall buildings with metal and glass architecture. There are space ports all along the city which stretches along the shores of a huge alien ocean. There are ships on the ocean coming into docks that extend out into the water. There are spaceships coming and going from the massive space ports. The city is stunning in its beauty and extremely futuristic.