Beyond Kusatsu: Day Trips with Kids

Let's be straight from the start: Kusatsu isn't surrounded by kid attractions. Once you leave the onsen town, the places small children can actually play thin out fast, and public transport between them is sparse. That's not a knock — it's the honest shape of a mountain resort, and it's exactly why an overnight in the town itself, slow and bath-centered, is the easy win with little ones. Treat day trips as optional extras, not the point. This is the day-trip companion to the main Kusatsu with kids guide.

First, the honest bit: the town is the win

If your kids are very young, the best "day trip" is often no day trip at all: a private bath, the yumomi show, a graze around the Yubatake, and an early night. The trips below are worth it for the right family and the right weather — but none of them beats an unhurried day in the town when you're traveling with a toddler.

Lockheart Castle — the fairytale day out

The one that genuinely lands with kids is Lockheart Castle — a real European stone castle, relocated and rebuilt, with gardens and a dress-up "princess" experience that delights small children. It's in Takayama Village, Gunma (not in Kusatsu itself), about 80 minutes by car from the town. It's open year-round, roughly 9 a.m.–5 p.m., with free parking; at the time of writing admission is around ¥1,300 for adults and ¥600 for children (4 and up) — confirm current prices and hours before you go.

One honest caveat: it's mostly outdoors, with garden paths, slopes and some steps, so it's a fair-weather trip and harder going with a stroller — save it for a dry day and bring a carrier for the little ones.

Pairing with Karuizawa — cool air and outlets

The most rewarding pairing isn't really a day trip — it's a second base. Karuizawa is about 76–85 minutes away by bus (the Kusakaru service), and it makes a lovely contrast: a cool-air highland resort with an outlet mall, easy nature walks, and — unlike Kusatsu — several baby-friendly hotels. Many families do the two together: Karuizawa's shopping and forests, then Kusatsu's hot springs.

Getting around: you'll likely want a car

This is the practical catch: beyond the Kusatsu–Karuizawa bus, public transport to the outlying spots is limited and infrequent. For somewhere like Lockheart Castle, a car is realistically the way — by train it's a longer haul via Numata. If you're not driving, lean on the Karuizawa pairing (which the bus covers well) and keep the rest of your time in the town.

Before you plan a day out

Planning the rest? See where to stay in Kusatsu with kids and Kusatsu with a baby or toddler, or let our trip planner suggest a route around your kids' ages — a starting point you book yourself.