Riddle Me This

All this "talk" of mazes and labyrinths and puzzles and riddles have set me on a single train of thought. So, while I waste my hours indulging (when I should be doing other things), here are some puzzle & maze-related sites for all to enjoy:

The Secret Garden of Mutabor
The Enchanted Maze Garden
Jo Edkin's Maze Page
Davis Farmland Mega Maze
Puzzle World
Riddle Nut
The Tree Riddle
The Riddle of the Sphinx

A riddle for you: How many letters are in the alphabet?