को: Goal ~> Goal

Pure Goal is only used in a location construction, in which case the word marked is literally the final destination of the action. In fact, को is often optional here.

• मैं
  I

  दिल्ली
  Delhi

  को
  DAT

  लौट
  return

  आया
  came

  ।
  .

  'I returned to Delhi.' 001

• अमेरिका
  America

  को
  DAT

  कब
  when

  जाओगे
  will-go

  ?
  ?

  'When will you go to America?' 002