This world is bursting with ethereal beauty. You'll find some of it at Shimabaraonsen Yutoroginoyu, which is famous for its natural, bubbling waters.
If you're planning to stick around a while in Shimabara, Shimabaraonsen Yutoroginoyu is a good place to kick off your sightseeing. This naturally heated water source is one of many attractions worth seeing here. Shimabara Castle, Unzen-Amakusa National Park, and Mount Unzen are also ready to be explored close by.