Seoul

Hwaseong Fortress in Suwon: walking the full 5.7 km wall loop in autumn, how to get there by subway, and the free-entry and Haenggung details to check.

Deoksugung Stone Wall Road in autumn: why I go at sunset on a weekday, how to get there by subway, and the palace hours and fees worth checking first.

Nami Island day trip from Seoul: the ITX-Cheongchun train, ferry or zipline, how long to stay, Petite France, and why autumn beat spring on my two visits.

Han River Parks in Seoul: the Banpo fountain show, ramyeon and chicken-delivery picnics, cycling, and the Korean delivery apps that bring food to the riverbank.

Dongdaemun and Gwangjang Market in one day: DDP’s curved architecture, late-night shopping malls, and the market food alley, from someone who has done both.

Itaewon, Seoul: international restaurants, the antique furniture street, Haebangchon’s hills and two free museums within reach, from a repeat visitor.

Hongdae, Seoul: café-and-shop streets by day, street performers at Hongdae Playground by evening, and clubs after dark, from someone who has done all three.

Insadong, Seoul: a walkable street of craft shops, traditional tea houses and the Ssamziegil complex, from a visitor who has spent slow afternoons there.

Myeongdong and Namsan: street food and K-beauty shopping, then the cable car up to N Seoul Tower, plus the noodle shop worth the queue.

Gyeongbokgung Palace and Bukchon Hanok Village in one day: free entry in hanbok, guard ceremony times, and why Bukchon’s alleys trip up first-time visitors.