Gamadasu Dome is a large-scale interactive facility that introduces the science and history of volcanic activity in the Unzen area.
The exhibits document the eruption activity of Unzen–Fugendake, which began in November 1990 and continued until the official declaration of its end in May 1996.
Through a variety of displays, the facility conveys both the power of nature and the efforts of local communities in responding to volcanic disasters.

Hara Castle Ruins mark the site of the final battle of the Shimabara–Amakusa Rebellion of 1637.
After four months of intense fighting, almost all members of the rebel forces lost their lives. Today, visitors can explore remains such as dry moats, the ruins of the main of honmaru, and turret foundations. Guided tours are also available by advance reservation.
Statues and gravestones dedicated to the rebel leader, Amakusa Shiro Tokisada, can also be found on the site.

From the seaside baths, visitors can enjoy sweeping views of the Ariake Sea.
The open setting creates a relaxing atmosphere that feels closely connected to the surrounding seascape.
The hot spring water is well known for its warming effect, allowing bathers to feel comfortable long after bathing.

Kazusa Beach is known for its white sand and green pine trees.
Clear waters, gently sloping shores, and surrounding pine groves ,create a rich natural environment.
Swings set along the beach and beautiful sunset views make it a popular spot for photography.

Obama Onsen is known for having the highest heat output and temperature in Japan.
Approximately 30 hot spring sources draw water at 105°C, with a total daily output of about 15,000 tons.
Visitors can enjoy the area’s hot springs while watching the sun set over the sea.

Hotto Futto 105 is a 105-meter-long foot bath inspired by the source temperature of Obama Onsen and is recognized as the longest foot bath in Japan.
It attracts approximately 150,000 visitors each year.
At sunset, visitors can enjoy soaking their feet while watching the sun set over Tachibana Bay.
Adjacent steam facilities allow anyone to steam vegetables and seafood using natural hot spring steam.

Green Tunnel, also known locally as “Kishamichi,” follows the route of a former railway that once ran along the coast between the Chijiwa area and Obama Onsen.
Today, it serves as Prefectural Route 201.
Lush trees lining both sides of the road create a tunnel-like canopy, making it a popular and picturesque coastal drive.
As the road is narrow in places, visitors are advised to proceed with care.

Ōmisaki Station, operated by the Shimabara Railway, is often described as the station closest to the sea in Japan and is located directly beside the Ariake Sea.
The Ariake Sea is known for having the largest tidal range in Japan, and the scenery changes dramatically with the tides.
At high tide, the sea appears deep blue; while at low tide, expansive tidal flats stretch out before the station.
The bright yellow train carss and a bench set against the seascape create a distinctive and photogenic scene.

Shimabara Castle is a prominent landmark of the city and a cultural site that reflects the history of the castle town.
Within the grounds, visitors can experience traditional Takigi Noh performances and explore exhibitions related to the region’s Christian history.
The castle grounds also featur a plum garden and seasonal flowers, including cherry blossoms and lotus blooms.
At certain times, visitors may encounter performances by the Shimabara Castle Nanamangoku Samurai Corps.

Shimabara Onsen is lLocated in the castle town where koi carp swim through the streets and is known for its neutral, skin-friendly hot spring waters.
In addition to easily accessible foot baths throughout the town,, the hot spring water is drinkable and has long been valued for its health-related properties.
There are seven drinking spring stations located across the city.