iPhone in-application icons

Design of icons that will be used inside our mobile travel application

TourSpot

We are developing travel mapping application. Please see a screen shot and refer to it for what we need below: http://www.tourspot.mobi/assets/images/tour.png

We need icons for the following elements:

1. The blue triangle-  that should be an icon that represents a point of interest. Inside the icon would be a number (so imagine a number 1 inside the triangle). We're looking for ideas on what that icon should be. Whatever the icon we choose we need numbers 1-30 inside the icon (so 30 icons) .

2. Icon to represent "information"

3. Icon to represent "pictures"

4. "+ and -" with zoom indicator (see the upper left corner as an example).

5. Icon to represent a person to indicate location

6. (optional) - 45x45 pictures to represent:

  A. New York City

  B. Washington DC

  C. San Francisco

  E. Boston

  F. Philadelphia

  G. United States

  H. Europe

  I. Asia

All icons (with the exception of #6, the pictures) should have the same "theme".

Should be consumer-friendly (non-technical audience) and easily recognizable.

Icons should be clever but easily recognizable.  For example, for #1, we don't want a #1 in asquare box. We're looking for something creative to represent points ofinterest but not something that is unrelated (i.e, an apple with a number 1 in it would not represent a point of interest in a city).