A mosaic of blue square tiles creates the illusion of water and movement in this beautiful pool. The different hues of blue in the small-scale tile add depth and variation, while their linear shape ...

Parquet in the pool! Architecture firm Claesson Koivisto Rune mimicked the pattern of the wood on this Swedish spa's deck in the neighboring pool, with superchic results. "The oversize (in comparison ...

When two Olympic pools at Rio turned from azure blue to bright green earlier this week, people around the world were left scratching their heads. The answer is not – contrary to popular assumption – ...