War Remnants Museum. The most visited museum in Vietnam, covering the Vietnam War with unflinching photo exhibits. Entry about ₫40,000 ($1.50). Heavy but essential; not ideal for young kids.
Cu Chi Tunnels. A 250-km wartime tunnel network 1.5 hours from the city. You can crawl a widened section, see hidden trapdoors and booby traps. Half-day tours from about ₫400,000-₫650,000 ($15-$25).
Mekong Delta day trip. Boat through coconut-palm canals, visit island workshops and eat lunch in an orchard. Full-day tours from about ₫500,000-₫900,000 ($19-$34). Pick a small-group tour over the big-bus versions — the canals feel very different without a crowd.
Landmark 81 SkyView. Vietnam's tallest building, with an observation deck on floors 79-81. Tickets around ₫340,000 ($13). Go 45 minutes before sunset for day and night views in one visit.
Ben Thanh Market and around. The classic market for coffee, cashews and souvenirs — bargain to about half the first price. The Central Post Office and Notre-Dame Cathedral (long under restoration, but worth the walk past) are a short stroll away.
A street-food crawl. Saigon's food scene is bigger and later-running than Hanoi's. Banh mi counters, broken-rice (com tam) grills and sidewalk seafood run past midnight in District 1 and District 3. A guided evening food tour by motorbike is the single best-rated activity we see in this city — book one for your first night and use it to map the rest.
Independence Palace. The 1960s presidential palace, kept as it was when tanks crashed its gates in 1975 — war rooms, retro salons and a rooftop helipad. Entry about ₫65,000 ($2.50). An easy hour between the museum and the cathedral.
Cho Lon, the Chinese quarter. District 5's markets and incense-filled temples, anchored by the 200-year-old Thien Hau Pagoda. Free, 15 minutes from District 1 by Grab, and far less touristy than Ben Thanh.
Bui Vien at night. The backpacker party street — loud, neon and fun for an hour's walk even if you don't drink.