It's common knowledge that spending time surrounded by greenery can improve your energy levels. If roaming around town has worn you out, Nagao Castle Park is a perfect place to rest and recharge your batteries.
This recreation and green space is often on the itineraries of travelers to Nagayo. But Nagao Castle Park isn't the only drawcard in the area. Glover Garden, Nagasaki Atomic Bomb Museum, and Oura Church are some other worthwhile sights nearby.