I had another brain storm the other night.
I thought about combining GOOGLE EARTH and Architecture into a fun Waymarking game.
You got it called GOOGI ARTcitecture.
It would work something like this:
Get an Image of A great Architecture that you can see well from space.

Then you have to try and get an image from the ground of what you can also see from space.
It has to be something interesting and an Artwork of some type,could be hedges,could be a rose garden within or around the object you are Waymarking,In this example the Masonic Temple In Alexandria Virginia.
Example ground images of the Masonic Logo.

Ground Images from the George Washington Masonic Temple
http://www.gwmemorial.org/tours/Faces.html
I am just looking at interest now so feel free to post your ideas and comments.