down

up, down

In geographical terms, down means south and up means north, and so you go up to Scotland from London and down to Atlanta (Georgia) from Chicago. A conventional exception to this straightforward logic arises with capital or major cities; for example it is customary to speak of going up to London from whatever direction. In the context of railways, the up line (or up train) is the one that goes into London, and the down line (or down train) is the one that goes out of London. This rule is not, however, absolute; from Edinburgh, for example, it would be more usual to talk of going (or driving or flying) down to London than up to it because Edinburgh is also a capital city and because distance makes the geographical orientation again the primary consideration.