99m Madame Gu off Barcelona, Spain

Pictured here in Barcelona is the 99-metre Madame Gu, built by Feadship and completed in 2013. Designed by Winch Design, she was the largest Feadship yacht at the time of her launch. Sporting a distinctive blue hull, amongst her many notable features is an enclosed helicopter hangar (first pioneered on the Feadship Ecstasea), fibreglass domes for the satcom/navigation gear, and a particularly elaborate interior.

Photo by Simon Iglesias