Visit the mausoleum, Presidential Palace area and One Pillar Pagoda for modern history — mausoleum open ~8:00–11:00 (closed Mon & Fri); check hours in advance.
Half-day guided trek through iconic rice terraces to minority villages — learn about local life and enjoy mountain vistas; guides usually available 7:30–17:00.
Return to Hanoi by road/train then fly to Da Nang (~1.5 hours flight); total transfer time ~4 hours including transfers and check-in — check flight times and allowances.
Cable car up to Ba Na Hills to see the Golden Bridge, French Village and gardens; park open daily ~7:30–21:30 — wear comfortable shoes and bring a jacket (cooler up top).