Hong Kong has some amazing geological features, so why not explore them up close on an educational day on the sea? The Sai Kung Geopark Day Tour, organised by Hiking Tours Hong Kong, will let you get up close and personal with some spectacular hexagonal columns, followed by a viewing of a sea cave and arch. You’ll also get to stop at Sharp Island, which is famous for its rocky tombolo, before heading back to Sai Kung.
$280. 9am-5pm, meet at University MTR station. Tickets from www.hikingtours.hk.