This monument was set up on the equator line determined about 200 years ago.

Looking down from the top of the monument.  

It has been calculated as the 0 degree 0 minute 0 second of latitude.  However...

The GPS on my cellphone does not say that!

With the GPS technology, the "up-to-date" equator line is about 200 metres away.  This is a solar clock set up on that line.

On the equator line, you can do some interesting experiments.  For example, are you able to stand a raw egg on the top of a nail?

It's said that it's easier to do so on equator!

Yes, someone made it!  I tried twice but couldn't though. :)