A relaxing reservoir walk

Tucked into seemingly every corner of Hong Kong SAR, from the mainland peninsula to its numerous islands, you'll find artificial reservoirs created to quench a booming population's thirst in this region that's short on natural freshwater. The metropolis innovatively uses seawater for such applications as toilet flushing, but its drinking and irrigation water is mostly delivered from elsewhere in China, then stored in reservoirs built into basins and bays throughout the bustling region. Ho Pui Reservoir, seen here from a drone's perspective, is a popular destination in the mountains, with a hiking trail that traverses right over the curving dam.