Japan
First of all, I have to say that Japan is a very expensive country. Do not set out without taking a good amount of money with you. The best time to visit is when the cherry blossoms bloom. A magnificent visual feast awaits you. In addition, many important traditional festivals are held during this period. Japanese people are very respectful and polite.
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Transportation and Visa to Japan
Since I was in Busan at the end of my South Korea trip, I decided to go to Japan by ship from here. There are several cruises from Busan to Fukuoka. I bought a ticket to the night ship to use the day. takes about 8 hours. If you are going to buy an inexpensive ticket, you should be prepared to sleep on the floor with 20 people in a 20m2 room. A person you don't know who missed a lot of drinks may want to hug you and wake up in the middle of the night. 
if you don't want to sleep, you can watch the view on the deck of the ship. You can travel in Japan without a visa.
Hiroshima
I took the train from Fukuoka to Hiroshima. One of the most important places to visit in Hiroshima is Hiroshima Castle. Hiroshima was rebuilt after the war. Hiroshima Peace Memorial Park is another must-see spot. Peace Memorial Park, which was established at the point where the atomic bomb directly affected, is a region that was rebuilt in memory of the citizens who lost their lives after being affected by this disaster. With the cherry blossoms blooming, the parks offer an incredible visual feast.
Tokyo
I traveled from Hiroshima to Tokyo by train. ticket prices are very expensive. I stayed in a capsule hotel in Tokyo for $30 a night. This hotel was very close to Sensoji Temple, one of Tokyo's oldest and most famous temples. I visited this temple twice, both day and night. It is a must see temple at night. Here are the important places to visit in Tokyo. Meiji Shrine, Tokyo Imperial Palace, Ginza District, Ueno Park, Yoyogi Park
