Exterior dream meaning is explained below using 2 different sources. Each interpretation is shown with its source.

Interpretation 1 — Eric Ackroyd

An exterior view of something - for example, the façade of a building - may symbolize the persona, the self-image you present to the world (and to some extent to yourself), as distinct from your inner self, or true self.
Source: A Dictionary of Dream Symbols Author: Eric Ackroyd

Interpretation 2 — Margaret Hamilton

The surface appearance, if inconsistent with the interior, is superficial
Source: Dream Dictionary Unlimited Author: Margaret Hamilton