The most common and most likely answer to this crossword clue is the 7 letter word CINEMAS
I've seen this crossword clue in The Daily Telegraph
C
I
N
E
M
A
S
Buddy explains!
The straight part
We know that "Where to find pictures" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case where to find pictures = cinemas.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does CINEMAS mean?
CINEMAS noun- A movie theatre, a movie house
- Films collectively.
- The film and movie industry.
- The art of making films and movies; cinematography