Hiroshima vs Seoul

Hiroshima

Hiroshima has a humid subtropical climate with four distinct seasons. Summers are hot and humid, winters are mild compared to northern Japan, and spring cherry blossoms and autumn foliage are spectacular. The rainy season (tsuyu) runs from mid-June to mid-July.

Seoul

Seoul has a humid continental climate with four very distinct seasons. Summers are hot and humid with a monsoon season (jangma) in July. Winters are cold and dry with Siberian air masses. Spring and autumn are short but spectacular.

Hiroshima

Hiroshima has an extensive streetcar (tram) network — the oldest and largest in Japan — supplemented by buses and a good cycling infrastructure. The tram system connects the station to Peace Park, the castle, and the Miyajima ferry terminal. An IC card (ICOCA/Suica) works on all public transport.

Walkability: Hiroshima is very walkable within the central area. Peace Memorial Park, the Atomic Bomb Dome, Hiroshima Castle, and Shukkeien Garden are all within a 25-minute walk of each other. The flat river delta terrain and well-maintained sidewalks make walking easy. The Hondori shopping arcade provides covered walking in any weather.

Seoul

Seoul has one of the world's best public transit systems. The subway is clean, punctual, and covers virtually everywhere you need to go. Get a T-money card (reloadable transit card) at any convenience store for 2,500 KRW and load it up. It works on subways, buses, and even taxis and convenience stores.

Walkability: Seoul is moderately walkable but spread out. The historic core (Jongno, Insadong, Bukchon) is compact and pleasant on foot. Hilly terrain in some neighborhoods (Bukchon, Itaewon) can be tiring. Use the subway to cover distances between districts and walk within them.