The one thing I will probably tell everyone forever about the Iguacu Falls is that you absolutely have to visit them! Our three-day trip to the network of 275 waterfalls was without a doubt the runaway highlight of our trip so far. The falls can be seen from national parks in both Argentina and Brazil, and you have to experience them from both sides if you go to Iguacu.

We booked the more expensive tour to ensure we got to see them as closely as possible - in a jet boat. The 'Grande Experience' was well worth spending a bit of extra dosh, even if we didn't count on getting so ridiculously, gloriously wet.

We took the hostel's tour bus to cross to the Argentinian side of the waterfalls, the first time I'd ever crossed a border into another country. Our bus driver was a classic bus driver - jolly and round and full of jokes about all the beautiful 'chicas' onboard. I think he was really in his element, surrounded by foreign girls, and he whistled for the entire journey.

The adventure started with a jeep ride, packed with people from about 10 different countries, and led by Natacha, our extremely nice tour guide. She told us about all the endangered species in the park as the jeep zipped us through the sub-tropical jungle on the bumpy ride. We might, if we were lucky, see a number of animals including jaguars, pumas, toucans and snakes.

I was quite keen to skip the snakes, thanks.

Natacha said her farewells at the mouth of the Iguazu River, wishing us an enjoyable shower. The river was really beautiful and serenly calm compared to what greeted us around the corner when the jet boat sped us towards the falls. The first glimpse of the waterfalls was pretty magical, mainly because we had no idea how big and impressive the rest of them were.

We hit some seriously fun rapids that didn't go on for long enough and then before we knew it, the jet boat driver launched us full throttle into the power of one of the falls. We were screaming so loud, everyone was laughing hard up as we got totally, magnificently drenched.

This happened a few more times until we were under one of the biggest waterfalls we could see, the force of which was just amazing as it smashed down on our heads. What a blast! I'd recommend the jet boat to anybody visiting the falls. You get a real sense of their power when they're tumbling down on you like the world's biggest shower. Pack your togs though. At first we had a bit of a giggle at the men dressed in their Speedos ready to get in the boat, later we realised the joke was on us.

There is a day's worth of amazing sights to see at the Argentina side of the waterfalls, all leading to the piece de resistance - Garganta del Diablo - an experience so special, I'm saving it for the next post. Adios!

Check out more photos from my trip in my Flickr album.

Read more about Brazil and Argentina.