The most common and most likely answer to this crossword clue is the 6 letter word LISTED
I've seen this crossword clue in Independent
L
I
S
T
E
D
Buddy explains!
The straight part
We know that "Was leaning/like famous old building" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case was leaning/like famous old building = listed.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 LISTED mean?
LISTED verb- To create or recite a list.
- To place in listings.
- To sew together, as strips of cloth, so as to make a show of colours, or to form a border.
- To cover with list, or with strips of cloth; to put list on; to stripe as if with list.
- To plough and plant with a lister.
- To prepare (land) for a cotton crop by making alternating beds and alleys with a hoe.
- To cut away a narrow strip, as of sapwood, from the edge of.
- To enclose (a field, etc.) for combat.
- To engage a soldier, etc.; to enlist.
- To engage in public service by enrolling one's name; to enlist.
- To be pleasing to.
- To desire, like, or wish (to do something).
- To cause (something) to tilt to one side.
- To tilt to one side.
- Entered on a list, especially an official one
- (of a building) protected from demolition or alteration