Iguazu Falls

After a 23 hour bus journey across the breadth of Argentina (not as hard as you'd think: luxurious wide leather seats, movies, free wine and food) Iguazu had been built up to be a highlight of our last few days away: 270 huge waterfalls cascading across the border between Argentina and Brazil. Wider than Niagra and more spectacular than Victoria, these falls had been billed as a 'must see'.  
Unfortunately the weather had other ideas. Who knew we'd have sub-tropical thunderstorms in sub-tropical rain-forest? I guess the clue's in the title. 
Being stoic Brits, and with the forecast for storms all week, we decided that we'd go to the falls anyway and hope that the rain stopped by the afternoon as it had the day before. 
It didn't.
Despite the drama and power of the falls, and a thrillingly wet speedboat ride underneath them, it was my lowpoint of the trip - just from disappointment at schlepping about in a continuous grey downpour and not being able to appreciate the day properly.

But, luckily for us, the weather made an unexpected change the following day - so we went back and did it all again, this time complete with sunshine, wildlife - and happy, contented smiles.