Tower
=====

+-- Level +2 ---+
|               |
|      *--M     |
|      |        |
|      |        |
|      *--%     |
|         v     |
|               |
+---------------+

+-- Level +1 ---+
|               |
|      *--%     |
|      |  v     |
|      |  ^     |
|      *--%     |
|               |
+---------------+

+-- Ground level ---+
|                   |
|      *--*         |
|     /    \        |
|    /    ^ \       |
|   *--*  %@-*      |
|   |\ v     |      |
|   | \      |      |
|   *  *     C      |
|   |#              |
|   | \   ^         |
|   *  *#-C         |
|                   |
|                   |
|                   |
|                   |
|      ^            |
|      *--%         |
|         v         |
|                   |
+-------------------+

+-- Level -1 ---+
|            ^  |
|         *--*  |
|            |  |
|            |  |
|            *  |
|            |  |
|         ^  |  |
|      *--%  *  |
|       @    |  |
|        \   |  |
|         *#-*  |
|               |
+---------------+