On our first day of worshipping the Iguacu Falls we discovered that the sights of these insane waterfalls never got boring. Tim and I spent the entire day climbing up trail after trail, looking at the falls spill madly down and we never tired of seeing them. Each time we popped out in a different location, there the falls would be from a new angle and it would be wickedly exciting all over again.

I happen to be cursed with the attention span of a small child, so this experience was quite unique for me - I can't think of many sights I could see so repeatedly for a day with so much joy.

By about 4pm the temperature had climbed to over 30 degrees and we had been running around like crazy people. I was getting pretty tired. But there was one more sight to see before we were done with the Argentina National Park: Garganta del Diablo, otherwise known as Devil's Throat.

They've built an insane walkway to this attraction. It's made of metal and seems to go on forever as it crosses the top of the Iguacu River. In the heat, our pace became more like a trudge and everyone around us starting showing signs of having done a hard day's yakka. I was holding on to the thought that surely we were walking to something amazing, otherwise why would they bother building this ridiculous walkway.

Garganta del Diablo really is as good as it gets at the Iguacu Falls. As soon as I laid eyes on it, I was blown away, literally unable to speak, barely remembering to breathe. I can barely describe it, so youīll have to just see it for yourself.

An unimaginable amount of water is gathered at the heart of a few extremely powerful waterfalls and every drop is moving at such a speed, everyone around me was totally mesmerised and I heard people exclaim their disbelief in a handful of languages. I kept saying over and over that surely it wasnt real, I couldnīt possibly be looking at this. Am I dreaming? I would occasionally shake my head like a stunned monkey.

After a very long time of staring down into the pit of the Devilīs Throat, we made our way back along the track in a daze. I couldn't stop smiling as I caught the weary, uninterested faces of those people coming the other way, towards the Throat. The thought of what they were about to see (some for the first time) made me extremely happy.

But that's Iguacu Falls for you. Just when you think you've seen it all, they unleash the Devil on you. Next time I'll tell you about day three at the falls, when we threw ourselves off a cliff to celebrate my 26th birthday.

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

Read more about Brazil and Argentina.