Near Gladstone in Queensland, Australia is a gigantic, bright-orange lake known as Red Mud Dam. Although the explanations I found were a little confusing, it seems that the colouring is due to residue formed through the process of extracting aluminium from bauxite. I think.

You can see that the colour only seems to be affecting about 2 thirds of the lake, as I believe the mud is processed to remove the residue.

However, I’m sure someone out there will correct me, even if I’m right

Thanks to Stuart Moffatt and Stephen Hope.

Here’s the perfect location in northern Idaho for the world’s largest game of chess. I imagine that pieces to fit the board might set you back a bit though…

Thanks to DDA and Brad.

Some pretty spectacular icebergs here off the coast of Greenland. Some of the larger ones are at least 5 miles across.

Thanks: Juha Vierinen

Here’s yet another world map on Google Maps, this time in what looks like a school playground, and for once the map is the right way up!

Thanks again to Kevin.

This is Gage Park, Chicago, and it looks like the fair’s in town! I’m not sure what most of the rides are, but if you look very closely (or in Google Earth) you can make out the shadow of the ferris wheel at the very south of the plot.

Thanks to Kevin.