Marx died here, Engels also, strangely (3,7)
I believe the answer is:
los angeles
'marx died here' is the definition.
(Groucho Marx)
'engels also strangely' is the wordplay.
'strangely' indicates anagramming the letters.
'engels'+'also'='engelsalso'
'engelsalso' anagrammed gives 'LOS ANGELES'.
(Other definitions for los angeles that I've seen before include "California city" , "city abroad" , "Second most populous city in the US" , "Hollywood city" , "centre of population" .)