There have been many explanations of this congeries of "web pages", a portal to many of them (though some are lost) can be found here.
What are Songs of Days? Things I wrote, for days that were. The writing continues, at least as of this writing. When it ceases I'll correct that statement, if I can.
What is a Tower of Approach? It is a time machine, currently set seven years in the past, though this has changed throughout the years. It is as well an introspectograph, a portal into the state of one mind.