Thanks for getting back to me.
There's a very unusual geographic tool on the web which you can find here:
Getty Thesaurus of Geographic Names (TGN)
I was mistaken in my earlier statement that you need to access the
information here one country at a time. You can actually pull up a
list of all the ports in the database (about 1,000, around the world),
simply by enter the word [ port ] in the "Place Type" box, and
clicking on the small "Search" button.
Of course, you can also enter a country name as well, if you prefer
seeing the ports listed one country at a time.
Similarly, by entering the word [ mountain ] in the "Place Type" box,
you'll get a large list of more than 3,000 mountains around the world.
Under the "Place Type" phrase is some clickable text that says
"Lookup". Click on this to get a list of all the feature-types you
can search on in the TGN -- there are hundreds of them.
Should be fun!
I trust this information fully answers your question.
However, please don't rate this answer until you have everything you
need. If you would like any additional information, just post a
Request for Clarification to let me know how I can assist you further,
and I'm at your service.
All the best,
search strategy -- Used existing bookmarks to the TGN site