Building above water means doing away with a part of construction that is quite literally the basis of most of our built environment: the foundation. In a world dominated by water, currents, and shifting levels are variables that simply cannot be ignored, which is why the most emblematic feature these projects share is their adaptability.

Instead of robust, deep bases – such as piles or caissons – designed to anchor architecture into the earth, floating structures frequently employ solutions like concrete pontoons or plastic drums to prevent the building from sinking. These are typically paired with anchoring systems to "fix" the structures, even if only temporarily, to a specific location.

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At first glance, building a pool right beside another body of water seems a little redundant. After all, why would someone choose to swim in a pool when they have a river or ocean to enjoy? However, for people with limited mobility and younger more inexperienced swimmers, natural bodies of water can prove both daunting and dangerous. Pools not only provide a controlled, secure space for them to enjoy aquatic activities, they also provide a connection with the surrounding landscape.

The key to successfully designing or recovering public spaces is to achieve a series of ingredients that enhance their use as meeting places. Regardless of their scale, some important tips are designing for people's needs, the human scale, a mix of uses, multifunctionality and flexibility, comfort and safety, and integration to the urban fabric.

To give you some ideas on how to design urban furniture, bus stops, lookouts, bridges, playgrounds, squares, sports spaces, small parks, and urban parks, check out these 100 notable public spaces.

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There is something about water that continually captures our imagination. Tranquil, dramatic, or ever-changing, the architecture of public baths and swimming pools can enhance the inherent qualities of water. Bathhouses were traditionally meeting-spaces where social differences bled away into skin and steam. Even in contemporary architectural projects, spaces for swimming and bathing often feel like a separate world, therapeutic and intimate.

Below are 12 projects that display stunning spaces for communal bathing and swimming.

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Completed in 2013 on the western coast of Bornholm—a small Danish island located south of Sweden—the Hasle Harbour Bath by White Arkitekter is one of a number of waterfront bathing facilities appearing in Denmark. Structures such as the Hasle Harbour Bath, the Kastrup Sea Bath, also by White Arkitekter, and the Copenhagen Harbour Bath by BIG + JDS, evoke images of a bracing coexistence with natural elements. If hygge, the Danish art of cosiness, has been one of the country's most successful cultural exports in recent years, the idea of a refreshing dip in the Baltic Sea offers a counterpart—a ying to hygge's yang.