Brilliant red Forth Bridge railway crossing, UNESCO World Heritage Site, at the Fírth of Forth in South Queensferry, near Edinburgh, Scotland, United Kingdom, Europe

Barragem do Alqueva, Rio Guadiana river, Alqueva dam hydroelectric power, Moura, Portugal, Europe

Forth Rail Bridge, built between 1883 and 1890, an achievement of Victorian engineering, Fife, West Lothian, Scotland, United Kingdom, Europe

Corinth Canal connecting the Gulf of Corinth in the Ionian Sea with the Saronic Gulf in the Aegean Sea, Greece

SpaceX Rocket Launch, United States of America

Brooklyn Bridge, New York City, spanning the East River between Manhattan and Brooklyn. When built in 1883 it was the longest suspension bridge in the world and carried railway lines until 1950.

Detail of Burj Khalifa, world's tallest tower, Downtown Burj Dubai, Dubai,United Arab Emirates