When you stumble upon a street address on the web, it is useful to be able to pinpoint it on a map. Normally you will copy the address into the clipboard, and then open up another browser window for Google Maps, and paste the address to display the map.
OS X Mavericks comes with a brand new Maps app, and with it comes the integration with Safari that allows you to quickly display a map directly from an address found within Safari.
First, select the street address you found on a web page. Control-Right-click (or two-finger tap on trackpad) on the selected address. On the popup menu, select the “Look up…” option.
A map of the selected location should pop up right within Safari. You can add the address to an existing contact or create a new contact with it. Or you can open the address in the new Maps app.