Seoul Tourism Organization offers free guided walks through areas such as palaces, hanok neighborhoods and city walls. The official guide lists Korean, English, Japanese and Chinese.
Standard reservations must be made online at least three days ahead. Individual tours usually allow up to ten people, with exceptions for some palace routes. The guiding service is free; palace admission and activity fees are extra.
Book via the official Seoul Guided Walking Tour website. Guide availability and severe weather can affect service. Contact: 02-6925-0777 (weekdays 09:00–18:00).