Three Major Belgian Cities: Brussels, Antwerp, Ghent

Belgium's top cities:

1. Brussels: Capital, largest; EU/NATO HQ; Gothic architecture, museums.
2. Antwerp: Port city; Cathedral of Our Lady, Plantin-Moretus Museum; arts/fashion hub.
3. Ghent: East Flanders; medieval center, canals, Gravensteen Castle, St. Bavo Cathedral.