You, a wizard, have a secret wizard base. Pesky adventurers and who knows what else would simply love to find it and loot all of your precious stuff. Here are some things to consider during construction.
Remember Harold and his purple crayon?
Can you think while scared out of your wits? Lets hope your adventurers can…
In the dark alleys of Malcaresh, the Caravan City of the Plains, many an adventurer meets his death at the end of an unseen blade. Even more part unwillingly with their belongings, having fallen victim to the thieves and cutthroats plying their old and ignoble trade. Yet even among these, the whispers of House Caraguil invoke fear and discomfort.
A single room in the lair of those cast away by the gods, this place of worship is nothing the adventurers are likely to expect here.
Sometimes a painting is just a painting.
This is not one of those times.
The dread Tower of Inversion, lair of the vile lich Zarakoth Xorast, contains five layers, each containing different tools of dark magic.
Perhaps those that practice elemental magic begin to take on characteristics associated with their chosen element. For instance, an earth elementalist might be prone to agoraphobia, while air and possibly fire elementalists might have problems with claustrophobia. Water elementalists might always seek the path of least resistance. A fire elementalist might have a cat's opinion of water. This could also apply to physical differences. Fire elementalists might have a freakishly high metabolism and a permanently high body temperature. Water elementalists would probably never get dehydrated, but might slow down a lot when it's cold. Etc, etc.