So, using the places DB, I've generated some maps. Here's one of every point in the continental US:

All Points

Each point has a certain amount of transparency set, so the darker the map is, there more points there are.

Here are all the town and city points overlaid on the base map:

Towns and Cities

Here are all the churches in the database:


And here are the cemeteries — creepy:


Here's all the mountain summits:


Here is all points over 1 mile high – makes me want to visit the Smoky mountains sometime: Mile High

And here are all points at 'sea level' – less than 30 feet or so: Sea Level

Filed under: data, place names