I am completely new to OpenSim but used to be a frequent visitor in SL.
I have been using all of the suggested methods for finding locations / landmarks for interesting places, but my insatiable appetite means that is not enough
There are various Hypergrid destination lists, mainly sourced by Hyperica and Hypergrid Business, but clicking through each link is tedious (at least for me).
So...... I have put together a list of almost 600 hypergrid locations and packaged them into a modified version of HGBoard so that they are accessible online directly.
Using this tool I am finding a lot more places, some interesting, others maybe not so, but..... if anyone would like a copy to use as they wish I am happy to send it to them, mod it, use it, throw it away as you wish.
It has a variable definition (at the front) for you to set your home grid - set to hypergrid (of course) which lets the board localise full HG addresses automatically. It also accepts a chat line input on channel 111 with a line number to start the display (so you don't have to page through all 600 items one at a time) - chat line format without the quotes is "/111 99" for example to force the display to start at item 99 (all locations are numbered on screen).
Hope this helps someone