Ghibli Park. Life-size worlds from Totoro, Howl's Moving Castle and other Studio Ghibli films, set in a large park in Nagakute, about 45 minutes from Nagoya Station by train. Tickets are advance-only for a fixed date, from around ¥3,500 ($22), and popular dates sell out weeks ahead — book before you fix your route.
Legoland Japan. Japan's only Legoland, best for kids under 12. One-day tickets start from around ¥4,500 ($28) and are cheaper booked online in advance than at the gate.
Nagoya Castle. Famous for the golden shachihoko statues on its roof. Grounds entry is around ¥500 ($3). Be aware the main keep's interior is closed for rebuilding — go for the grounds and the beautifully restored Honmaru Palace, not the tower.
SCMAGLEV & Railway Park. Retired bullet trains and maglev prototypes you can walk through, near the port. Entry is around ¥1,000 ($6) and train-mad kids can lose half a day here.
Eat the local classics. Nagoya has its own food identity: miso katsu (pork cutlet in dark miso sauce) and hitsumabushi, grilled eel eaten three ways.