MEXICO // Aquamarine with a heavy tint of "green', this underwater sculpture park near Cancún is designed not just for aesthetic beauty, but with the intention of diverting human traffic away from endangered coral reefs nearby. Since opening in 2010, the Museo Subacuático de Arte (aka MUSA) has successfully tackled the issue of reef degeneration with creativity and flair, submerging around 500 sculptures at depths of up to 10m (33ft) in the waters off Cancún and Isla Mujeres. You can snorkel, dive or - for nervous swimmers or those averse to getting their feet wet - peer through the crystal waters in a glass-bottomed boat to view the fantastical creations, many of them created by British artist Jason deCaires Taylor. The highlight? A collection of 400 barnacled human statues lined up like terracotta warriors called 'Silent Evolution'.