Visiting one of the world’s most beautiful aquariums is perhaps the best way to peek inside the homes of countless marine species. Here, guests have the opportunity to learn how these animals live and watch them in action. In addition to being incredible vessels for education, they can also be enriching for the architecture and design obsessed. After all, there’s much more to these spaces than just vats of water. In Detroit, emerald-colored glass tiles envelop the oldest aquarium in the Unites States, while one in Zhuhai, China, has decked out the interiors to look like coral reefs. Below, AD visits 7 stunning aquariums around the world. You may just want to dive into the tanks and take up residence with the fish.