There are lots of natural surroundings in the Arima Onsen area. There are fireflies in the Arima River from the end of May to the end of June, along with rhinoceros and stag beetles in the area around Ryuusenkaku during the summer. For insect collecting, you can use our insect nets free of charge. Insect cages are available at our Gift Shop for 300 yen+tax. Please inquire at the front desk when you would like to use these items.