It ain't pretty...

... but think of how much rain water we'll collect!  It would be lovely to have a 250 gallon cistern in which to hold rain/snow water. I should like it to be raised high enough to water lower side yard as well as to the upper yards. 
Oh boy! I get to construct our very own water tower! 

The roof is complete.  This week will be insulating and drywalling, next week the siding will be installed.