Personalized jewellery allows you to mark occasions, people and in this case, places. Three Jane NY offers customizable necklaces (and bracelets) with a simple street map on an oblong of gold or silver, with a tiny diamond marking the spot (of most importance to you).
The plate is made of 14k gold plate with an attached 18 inch chain; the plate measures 15.5mm x 26.0mm. It is available for USD $150.
IntoTemptation.....jewellery musings 
Oh wow this is a very interesting idea. There is nothing like having a piece of jewelry that carries moments or places you are fond of.
Personalized jewelry is great. This reminds me of the charms on vintage bracelets.
Exactly!!!
It speaks to the meaning jewellery takes on. First by the artisan or designer, and then by the wearer. And everyone who sees it gets a tantalizing glimpse.