By name and/or placetype: Click on 'search' and you will see a simple fill-in field, where you can fill in the geographic name you are looking for and a combobox with the different placetypes. If you leave the fill-in form blank and you click on search, you will get the list with all the placenames from the database.
Examples:
Browse the Geographic tree: By clicking on the + and- sign you will expand and collapse the tree and see all the relations between the different placetypes'.
The gazetteer can roughly be divided into two categories: a physical part and an administrative part:
Of course these two parts can have relations between each other (i.e. the Dutch Exclusive Economic Zone is part of the North Sea)