Government Complex Sejong Rooftop Garden

Character

This garden runs for about 3.6 kilometers across 15 government buildings. The continuous roof was part of the complex design from the beginning, carrying Sejong’s “Flat City, Link City, Zero City” ideas into a planted landscape that visitors can walk on guided tours

The design also borrows from *sunseongnori*, the Joseon-period custom of walking around a fortress while looking both inside and outside its walls. From the roof, that idea becomes literal: government offices lie below, while Sejong Lake Park, the Presidential Archives and the surrounding city spread out beyond the complex

The experience

At walking level, the roof often feels like ground. Slopes, lawns, herb and medicinal gardens, vine tunnels and longer planted sections hide many of the building edges, even though active ministries continue directly underneath. The unusual scale becomes clearer only when the route opens onto longer views

A public visit is tightly organized. You check in at the designated government building, show identification and move with a group along a one-way route. The security procedure is straightforward, but it changes the rhythm: this is a walk through a working government complex, with fixed departure times and no casual entry from the street

The broadest views explain the architecture better than the planting list does. The low roofline runs toward the lake and central civic district, allowing the separate ministries to appear as parts of one long structure. From above, the decision to keep the complex horizontal becomes much easier to understand

History

Government Complex Sejong was designed for Korea’s new administrative city as a low, connected alternative to a district of separate government towers. Bridges, shared circulation and the rooftop garden linked the buildings into one system, while the project’s Flat City, Link City and Zero City principles emphasized horizontal form, connection and environmental performance

Central government offices began relocating to Sejong in 2012, and the complex expanded in stages. The planted roof developed with those buildings, giving the connecting structure landscape, circulation and environmental functions from the start

In January 2016, Guinness World Records measured 79,194 square meters of rooftop garden and recognized the Government Complex Sejong under its largest-rooftop-garden record. The operating authority now describes the connected garden as about 3.6 kilometers long, with extensive planting divided among themed sections

Public tours opened part of that working roof to visitors. Access remains seasonal and guided because the route crosses an active government complex and the landscape itself needs protection from weather and heavy use. That controlled access is part of the place today, alongside the record size and the original design idea

Before you go

Use the current Building 6-to-Building 1 route as part of the visit itself. Following the roofs in one direction makes the complex’s horizontal design much easier to see as one continuous structure

Plan around a timed guided session. Arrive before departure, bring photo identification and use the current Building 6 check-in point. Advance booking is the safest choice; limited on-site registration is also available when sessions have capacity

The roof is exposed to sun, wind and rain, and public tours pause during the hottest and coldest parts of the year. Construction inside the government complex can also change the walking route, so use the current operator schedule when choosing a session