Cards can appear in dreams in many different forms—such as postcards, maps, entrance cards or tickets, playing cards, and business cards.
In the case of playing cards, it implies that you do not take life seriously enough and are taking too many risks. It also may be a suggestion to look at life more as if it were a game and to be less serious. It is important whether you have good or bad cards in your hand.
If you dream about a particular card, find out the meaning by checking out books about reading cards.
With postcards and maps, refer to the place or area pictured on them.
If you can’t make any connection with the picture, postcards and maps may be an expression of a desire for travel and vacation.
Tickets and business cards point to areas that are normally unavailable to you. In the case of tickets, the specific area depicted is most important: what you are admitted to is an indication of the direction you should take in your life. In the case of business cards and credit cards it is the person who carries them who is important.
A business card shows that you are, or want to be, successful.
Folklore: Quarrels loom on the horizon.... Little Giant Encyclopedia
Vision: A skyscraper is a symbol of emotional frustration; the building itself is a phallic symbol and related to sexual desires. Do you feel isolated? Do you feel you are walking through life as a nameless person? If a woman dreams about a skyscraper without windows: her partner is emotionally unavailable.
Depth Psychology: Living in a skyscraper: you are in the wrong place, because the atmosphere is detrimental to your emotional health. In all other cases, the dream is a reminder: limit your expectations—you have set your hopes too high. See House.... Dreamers Dictionary