Watercraft

Just off the east coast off Spain lies this collection of holes in the Mediterranean. They're used to drain the Atlantic, which allows for regular cleaning of the sea-bed. Honestly. OK, so I have absolutely no idea what they are.…

In 1924 this former coral rock quarry near Miami was transformed into Coral Gables Venetian Pool, complete with cascading waterfalls, coral rock caves and a palm-fringed island. Apparently it is the only pool in the US to be included in…

This is San Francisco's popular tourist spot, Pier 39, and covering nearly every square inch of those floating docks in the harbour are hundreds upon hundreds of sea lions. The light coloured patch in the middle-left is the only bit…

This is the absolutely stunning Roquefavour aqueduct, which carries water from the Durance over this valley in France. Built between 1841 and 1847, this incredible stone structure is a massive 83 metres tall. There's lots more stats and a good…

The last battleships ever built by the United States are known as "Iowa class" and were named after the states of Missouri, Wisconsin, New Jersey and Iowa. The four ships were built in the 1940s and between them have served…

Yet another kind of Norwegian boat. This time, a great whopping blue cruise ship, which by my measurements (bear in mind that this was my thumb and forefinger), is about 220 metres long. Who can identify this one?