Seoul city guide: sources, transformations and photo credits
Reviewed October 11, 2026.

The text, questions, explanations and selection of fifteen sights were written
for Worldly. Official tourism, heritage and transport references are linked below.
Recommendations to group nearby places and allow time are editorial choices.
Admission prices, opening hours and closing days are deliberately left to the
linked operators so a saved guide does not promise outdated access.

Geography, neighborhoods, food and planning
https://english.visitseoul.net/
https://english.visitseoul.net/nature
https://english.visitseoul.net/area
https://english.visitseoul.net/restaurants
https://english.visitseoul.net/culture
https://english.visitseoul.net/attractions
https://english.seoul.go.kr/
https://hangang.seoul.go.kr/
https://en.wikipedia.org/wiki/Seoul
https://en.wikipedia.org/wiki/Bindae-tteok
https://en.wikipedia.org/wiki/Korean_barbecue

History, architecture, museums and cultural places
https://royal.khs.go.kr/ENG/main/index.do
https://whc.unesco.org/en/list/816/
https://whc.unesco.org/en/list/738/
https://ich.unesco.org/en/RL/yeondeunghoe-lantern-lighting-festival-in-the-republic-of-korea-01568
https://www.museum.go.kr/ENG/main/index.do
https://www.warmemo.or.kr/
https://sphh.sscmc.or.kr/
https://www.sac.or.kr/
https://www.ddp.or.kr/

Transport
http://www.seoulmetro.co.kr/en/cyberStation.do
https://www.bikeseoul.com/
https://www.airport.kr/
https://www.airport.co.kr/gimpoeng/

District boundaries
Source: OpenStreetMap contributors, administrative boundary relations
(admin_level 6) for the twenty-five gu of Seoul Special City (ISO 3166-2 KR-11),
retrieved October 11, 2026 through the Overpass API, EPSG:4326.
License: Open Data Commons Open Database License (ODbL) 1.0
https://www.openstreetmap.org/copyright
https://opendatacommons.org/licenses/odbl/1-0/

Worldly assembled each relation's ways into polygons, simplified the shared
coverage with Shapely 2.1.2 using a 0.00005-degree tolerance, rounded
coordinates to six decimal places, and selected interior label anchors.
District IDs 01-25 follow the ref tags in OpenStreetMap, Seoul's own district
order. Transformations, district descriptions and sight selection are Worldly's
work. The map is for geographic learning, not navigation or legal boundaries,
and the wider capital area in Gyeonggi and Incheon is outside it.

Rebuild: python3 scripts/build-seoul-districts.py <overpass.json>
The guide's sight coordinates are longitude/latitude in WGS84, taken from
Wikipedia, Wikidata and OpenStreetMap. All pins are checked against their
declared district. Yeouido Hangang Park is pinned on its lawns near Yeouinaru,
and Gwangjang Market at its main hall; each is a specific starting point rather
than a claim that an entire area fits one pin.

Photographs
Thirteen distinct Wikimedia Commons photographs illustrate the guide. Each
image links to its original file page and identifies the author and license.
Exact source URLs and credits are preserved in src/lib/cities/seoul-photos.json.
Thumbnail URLs were obtained from Wikimedia's imageinfo API at 1280px width;
the subway photo is narrower than that and is used at its original size.

Wikipedia articles are also pinned explicitly to each map answer and learning
question for the existing Worldly further-reading feature. Their article titles
are identifiers; authored questions and explanations use original wording.