The tiny island of Ap Chau and its larger neighbour, Kat O, located in Double Haven, have changed little in decades. They form part of the Hong Kong UNESCO Global Geopark. Visitors can relax as they learn about the history, culture and lives of the islands’ fisherfolk. Explore Ap Chau — best known for its spectacular, Instagram-friendly ochre-coloured rock formations, including one shaped like a duck’s head with a sea arch forming its ‘eye’ — and take an enticing hike across Kat O, offering spectacular hilltop views of Double Haven — one of Hong Kong’s most beautiful stretches of ocean.