While there are plenty of places abroad that are worth the money for entry, I find some of the best places to visit are completely free - and it seems like every place I've visited has at least one or two things you can go and see without paying a cent. What tourist traps have you visited that are completely free? I was in London a few months ago, and I quickly discovered that almost every museum in the city is free of cost. Not all of them, but the ones I wanted to see - the Science Museum, the National Gallery, The British Museum, and in particular the Museum of Natural History, which was amazing - were all free of charge. Spent three days wandering through them all with only the cost of transit to show for the trips. If you like anything historical and don't get antsy looking at displays, I highly recommend all of the above.