Some addresses, especially in England are really, really long. Quaint as it is, it's a bit annoying to write on an envelope! I have some cousins who live there, and their addresses verge on something like this:

Mr. Nigel Clive Smith-Smythe-Smith
Wutheringhamtponshire House
Lower Green Village Square
Green-Village-Square-Upon-The-River
Green Village
East Anglia
England
United Kingdom
1A2 B3C