Standing at just over 21m, the world's tallest sandcastle has been built in the town of Blokhus in Denmark. The structure, reinforced with glue and clay, took 4,860 tonnes of sand to make.

Standing at just over 21m, the world's tallest sandcastle has been built in the town of Blokhus in Denmark. The structure, reinforced with glue and clay, took 4,860 tonnes of sand to make.