What the card describes
The image is a tower struck by lightning, with figures falling from it. The tradition reads it as the sudden collapse of something built wrong, and the emphasis belongs on the second half of that sentence. What falls in a Tower reading is not chosen at random. It is the thing that was propped up, worked around, or quietly known to be failing.
That is why the card is often paired with relief as much as shock. A structure that was costing a great deal to maintain stops needing to be maintained. The tradition does not promise that this is pleasant, and it is usually not.
Upright and reversed
Upright, the collapse happens. Keywords attached to it are sudden change, collapse and revelation, and the last of those is the one most often dropped. A Tower moment is traditionally read as showing you something that was true the whole time.
Reversed, the tradition splits. One reading is a collapse postponed, which is the version that carries a warning: delay rarely makes it smaller. The other is a narrow escape, where the structure held. Which applies depends on the surrounding cards, and a reader who tells you it is definitely one of them is guessing.
Where it sits in the sequence
The Tower is the sixteenth trump, between the Devil and the Star. That placement carries most of the meaning. The Devil is the card of the arrangement you are bound to and half aware of. The Star, which follows, is quiet and restorative.
Read in order, the sequence describes a bind, its collapse, and what is possible afterwards. The Tower is the middle term rather than an ending, and reading it as an ending is the commonest mistake made with it.
When it comes up
The honest thing to say about a Tower pull is that it is a prompt, not a forecast. The useful question it puts is which structure in your life is being held up by effort rather than by soundness, and what would happen if you stopped holding it.
That question is worth sitting with whether or not you think a card can know anything. This site takes the view that a tarot reading is a structured way of asking yourself something, and the Tower asks a sharper question than most.
Questions people ask about this
Is the Tower always a bad card?
The tradition treats it as difficult rather than bad. What it describes is a collapse of something unsound, and the traditional reading includes the relief of no longer having to hold it up.
What does the Tower mean reversed?
Two readings compete. One is a collapse being postponed, with the warning that delay rarely helps. The other is a narrow escape where the structure held. The surrounding cards decide which, and anyone certain without them is guessing.
What planet rules the Tower?
Mars, in the standard correspondence used by the Golden Dawn and most modern decks. That association is where the abruptness in the card's reading comes from.
Does the Tower predict a specific disaster?
No, and this site does not make predictive claims. The card is a prompt about structures that are being maintained by effort rather than soundness, which is a question you can actually answer.
Why does the Star follow the Tower?
The trumps run in a deliberate order, and the Star is traditionally read as the quiet that follows the collapse. Reading the Tower as an ending rather than a middle term is the most common error made with it.
Can I draw this card here?
Yes. Every spread on the site draws from the full deck, reversals included if you leave them on, and each reading rebuilds from its own link so you can come back to it.