Modifiers — Put Them Next to What They Modify

A modifier (adjective, adverb, phrase) must sit directly next to the word it describes.

Dangling modifier:

Wrong: "Walking to school, the rain started." (The rain was walking?)

Right: "Walking to school, she got caught in the rain."

Misplaced modifier:

Wrong: "She almost ate the entire cake." (She almost ate? Or she ate almost all?)

Right: "She ate almost the entire cake."

SAT pattern: The sentence starts with a modifying phrase followed by a comma. The subject right after the comma MUST be the thing being modified.

"Renowned for its architecture, [what is renowned?]" — The next word must be the thing that is renowned.

Reference:

Wikipedia: Dangling Modifier

https://en.wikipedia.org/wiki/Dangling_modifier