What is this ? on the grounds od the property

The top is brass? and it has galvanized piping running to it.

http://i187.photobucket.com/albums/x296/dawlita/Yasser108.jpg

David, Is there a swimming pool, spa or fountain? This is a junction box for an underwater light fixture.

Here are some examples:
http://www.thefind.com/garden/info-swimming-pool-junction-box

That is what I was thinking also, don’t see them that often, but kinda hard to forget.

Bingo !!!

yes there is a pool…Thanks for the info.