Increase Zoom Level in Google Maps

You often using google maps? But the view isn't close enough?
That you need:
1. Go to Google Maps
2. Find the location you wanna see
3. Set max possible zoom level
4. Click LINK on Top-Right of map (not window)
5. In the end of line, you'll see z=18 (for example)
6. Then change z parameter to 20 or 22
7. Copy paste the link to address bar and press enter
8. Wait a second

Remember that the view is depended to Google database
for example, go to this link