A SEAPLANE comes in to land at Juneau, Alaska, silhouetted against the sun. We were walking along the seafront in September 2017 when I took the shot.

Seaplanes are essential here because the Alaskan capital has a rare distinction.

It is unique among the 49 US capitals on mainland North America in that there are no roads connecting the city to the rest of the state, nor indeed to North America as a whole.

All goods have to come in by plane or boat because the rugged terrain surrounding the city effectively makes it an ‘island’.

The only other US capital so cut off is Honolulu in Hawaii. Now that’s one for the next pub quiz geography round…