ACCRA, Ghana — Melania Trump opened her first big solo international trip as U.S. first lady on Tuesday with a wave, a smile and a baby in her arms, aiming to promote child welfare during a five-day tour of Africa.

She arrived in the West African nation of Ghana after an overnight flight from Washington and quickly made her way to the Greater Accra Regional Hospital.

The first lady saw how babies are weighed — they’re placed in sacks that are then hung from a hook attached to a scale. She also watched a nurse demonstrate how vitamins are administered to babies by mouth and toured the neonatal intensive care unit.