I've always been fascinated by iron structures, such as the Eiffel Tower, the Cavenagh Bridge and the Sydney Harbour Bridge. How these complicated, heavy structures could have been conceived and constructed without computer aided design (or even electronic calculators!) boggles my mind. Honestly!
For those interested, I took a whole bunch of photos around the bridge last year, including what I hoped were some more unconventional ones.
It also goes without saying that all the best things/people were opened/born in/around March. Ahem.