Tourists at Robinson Falls, Cameron Highlands, Perak state, Malaysia, Southeast Asia, Asia

Erawan Falls, Kanchanaburi, Thailand, Southeast Asia, Asia

Erawan Falls, Kanchanaburi, Thailand, Southeast Asia, Asia

The Clyde River Falls near New Lanark, Lanarkshire, Scotland, United Kingdom, Europe

A young heterosexual Latin couple in love enjoying a swim in a mountain stream in pristine rainforest, Minas Gerais, Brazil, South America

A young heterosexual Latin couple in love enjoying a pristine mountain stream in the Brazilian rainforest, Minas Gerais, Brazil, South America

View of the Iguassu (Iguazu) (Iguacu) Falls, UNESCO World Heritage Site, a waterfall on the border of Brazil and Argentina, South America

View of the Iguassu (Iguazu) (Iguacu) Falls, UNESCO World Heritage Site, a waterfall on the border of Brazil and Argentina, South America

All Saints Church, Isleworth town centre, seen from the Thames Path in Kew in autumn, River Thames, London, England, United Kingdom, Europe

Woodland on Hampstead Heath in autumn, and City of London financial district skyline, Highgate, London, England, United Kingdom, Europe

Woodland on Hampstead Heath in autumn, and City of London financial district skyline, Highgate, London, England, United Kingdom, Europe

Hampstead Garden Suburb, skyline of the early 20th century suburb in autumn with spire of St. Jude's church and residential housing, Barnet, London, England, United Kingdom, Europe

All Saints Church, Isleworth town centre, seen from the Thames Path in Kew in autumn, River Thames, London, England, United Kingdom, Europe

View of the Iguassu waterfalls and river, Iguazu Falls (Foz de Iguacu), UNESCO World Heritage Site, Parana, Brazil, South America

View across Terrace Field and Petersham Meadows to the River Thames, with woodland, and public footpath in autumn, Richmond Hill, London, England, United Kingdom, Europe

Aerial view of the Devil's Throat and the Iguassu River, Iguazu Falls, UNESCO World Heritage Site, Parana, Brazil, South America

Beech tree woodland in autumn, pedestrians walking through the trees, Hampstead Heath, London, England, United Kingdom, Europe

Backpackers enjoying a pristine waterfall and mountain stream in the heart of the South American rainforest, Minas Gerais, Brazil, South America

The Garganta del Diablo (Devil's Throat) at the Iguazu Waterfalls, UNESCO World Heritage Site, Puerto Iguazu, Argentina, South America

A beautiful young woman sitting in a shaft of sunlight in front of a pristine waterfall in the rainforest, Brazil, South America

Two young hikers canyoning up a river and standing in a cave in the rainforest, in front of a pristine waterfall, Minas Gerais, Brazil, South America

The Thomas Telford Bridge and the Invermoriston falls and river on the shores of Loch Ness, Scotland, United Kingdom, Europe

Iguacu (Iguazu) (Iguassu) falls in full flow, UNESCO World Heritage Site, Argentina, South America

Iguacu (Iguazu) (Iguassu) falls in full flow, UNESCO World Heritage Site, Argentina, South America