Mosque al Nuri and waterwhells on Orontes River, Hama, Syria, Middle East

Arcos da Lapa (Carioca Aqueduct), Lapa, Rio de Janeiro, Brazil, South America

Steam powered Traction Engines at a rally in East Sussex, England, United Kingdom, Europe

Alley in Valletta, the capital of Malta, Mediterranean, Europe

View of Aqueduct from Ottoman era, Dimos Kavalas, Eastern Macedonia and Thrace, Gulf of Thasos, Gulf of Kavala, Thracian Sea, Greece, Europe

Falkirk Wheel rotating boat lift, Falkirk, Scotland, United Kingdom, Europe

A Traditional Dhow against the West Bay Skyline, Doha, Qatar, Middle East

Waterwheels (norias) on Orontes River, Mosque al Nuri on far bank, Hama, Syria, Middle East

Falkirk Wheel rotating boat lift, Falkirk, Scotland, United Kingdom, Europe

Speicherstadt (City of Warehouses), HafenCity district, Hamburg, Germany, Europe

Village with round huts near Mora, Cameroon, Africa

Steam engine, Glentleiten farming museum, Bavaria, Germany, Europe

Siena Cathedral, Siena, Italy

Colosseum, Rome, Italy