Water, water, everywhere. It may sound like you're back at primary school getting a lesson on the water cycle, but that is just the theme of this entry.

For starters, leaving Floripa was the first time we had reason to use the rain covers on our backpacks. An overnight bus later and we arrived into the Brazilian town of Foz do Iguaçu, grabbed a quick shower and were off to one of the seven natural wonders of the world - Iguazu Falls.

We arrived at the first view point of the falls and were immediately impressed with what we saw, the part called the Salto Bozzeti. But with trees blocking our left hand side we were only seeing a small part of the falls. As we moved along the cliff top, we stopped at each view point, we were teased by the trees, getting to see a little bit more each time, until we reached the end when we got to see the whole spectacular lot of it. It was awesome, in the original meaning of the word, not the way the kids use it. Torrents of water gushing over every edge, sometimes falling over 80m and sometimes falling in tiers, onto one cliff top, then another, before crashing into the Rio Iguazu.

Also on the Brazilian side is a steel bridge that allowed us to walk out on top of one of the falls, the Salto Santa Maria. We got soaked with spray from the curtain of water behind us, the Salto Floriano and Sean's waterproof camera proved worth it's weight in gold.

On Saturday, myself and PC left Maire and Sean by the pool to go and visit the Itaipu Dam. Its the biggest dam in the world, and when the Three Gorges Dam in China is finished it still will be the biggest, but by electrical output, not size. It sits on the border between Brazil and Paraguay, it's 14,000 MW power output being shared by each country. This accounts for 25% of Brazil's national power usage and 90% of Paraguay's.

We took a tour which started off with a friendly corporate video in which they lay down the statistics of the dam, including how many football stadiums of concrete it took to build, as well as the "corporate responsibility" activities the company organises and the environmental action it takes. Of course they don't mention the amount of CO2 that all that concrete produced! They also doesn't mention how the reservoir meant the loss of the Guaíra Falls, which was bigger than Iguazu!

But the bus tour really showed us how big the dam was. One of the spillways was open too, so we got to see even more millions of litres of water gushing into a river - but the Rio Parana this time. We did also technically cross onto Paraguayan land, but there is no passport stamp to show for it as the whole dam area is owned by the Itaipu company.

That evening we got the VIP treatment while crossing into Argentina. Our hostel recommended a taxi as it would work out cheaper, there being four of us. We didnt know that this driver would get our passports stamped for us at each country! Better than any bus.

So we were in Argentina, my 6th country. Argentina being famous for a couple of things, there are no prizes did guessing what I had fit dinner that first night - steak and red wine. I was not disappointed.

Sunday morning we were up and ready to see the falls from a different perspective. The Argentinian side has a lot more going on, with three different steel walkways to take you close enough to the falls to get soaked. We only had time to take two if these paths, but both were brilliant.

The first took us right next to the very first waterfall we had seen from the Brazilian side, the Salto Bozzeti. It also meant we could take a boat trip underneath the falls! That was impressive! I couldn't even open my eyes because the spray was so intense. Then we circled around for more. And then more. Three trips under the torrents of water meant my shorts didn't dry until the following day, even though it was over 30 degrees.

The second pathway was a longer walk and it took us out on top of the u-shaped waterfall called Garganta del Diablo, or the Devil's Throat, which is the biggest and highest part and accounts for about half of the entire falls. It also is the part that divides Brazil from Argentina. The spray here prevents you from seeing the bottom - it's just white everywhere you look.

We also got to try a lomitos, which is a popular Argentinian sandwich consisting of a thin slice of steak, ham, fried egg, lettuce, tomato and mayo - delicious.

That evening we were leaving Puerto Iguazu, the town on the Argentinian side, for Buenos Aires on an 18 hour bus - my longest so far. A conversation with a weird Australian women led to me learning we had been an hour behind all day - we has crossed from Brazil without realising there is a time difference. Pack of dumbasses!