Nagasaki is a city in Japan that was heavily damaged by an atomic bomb during World War II. As a tourist destination, it offers a variety of historical sites related to the bombing, such as the Nagasaki Atomic Bomb Museum and the Peace Park. It also has many other attractions, such as scenic views, temples and shrines, and delicious local cuisine.

Potential Itinerary for a one-day visit

1. Start the day by visiting the Nagasaki Atomic Bomb Museum. This museum provides a detailed look at the events leading up to the atomic bombing of Nagasaki, as well as its immediate and long-term effects on the city and its inhabitants.
2. Take a short walk to the Peace Park, which is located nearby. The park features monuments and statues dedicated to the victims of the bombing, as well as a Peace Fountain and an eternal flame.
3. Take a tram ride to the top of Mt. Inasa for panoramic views of the city. The ride takes about 20 minutes and the views from the top are said to be particularly beautiful at night.
4. Have a traditional Nagasaki-style lunch at a local restaurant. Some popular local dishes include champon (a noodle dish), sara-udon (a type of fried noodle), and kasutera (a sponge cake).
5. Visit the Glover Garden, a collection of Western-style houses from the 19th century that was once owned by wealthy merchants. The houses are now open to the public as a museum and offer a glimpse into the lifestyle of the city's foreign residents during the Meiji period.
6. Visit the Nagasaki National Peace Memorial Hall for the Atomic Bomb Victims, a hall which is dedicated to the memory of the atomic bombing of Nagasaki. It is a place of solemn reflection and mourning and is one of the most important peace memorials in the city.
7. End the day by visiting the Sofukuji Temple, which is a beautiful Chinese-style temple that was built in the early 17th century.