Any location database for Drupal?

I have the Addresses module that includes all the countries of the world, but is there anything that also adds States/Provinces as well as Cities? For example, when a user is inputting their information, they select country first from the drop down list, and then when they go to State/Province there would either be A) a drop down list of states/provinces in that country or B) once they type the first letter, a list will pop up showing several options. Then once they go to city and type in the first three letters or something, it will show a list of all the cities that start with those letters in the selected state/province in the selected country.

I couldn't find an exact example on the web, but something similar can be found at: http://www.aircanada.com/en/home.html

If you go to the Leaving From field and type the letters "SAN" for example, a list comes up with all the airports in the world that are in a city that starts with "SAN".

The cities are the most important to me so even if there wasn't something for the state/province, if there is something for the city which then shows the state/province afterward (like the Air Canada site) then that would be great.

As a bonus, it would be great if when searching for a user, a person could choose the country and city and then select to show the results of all users located within 100 miles of that location or something.

Thanks.