Built in 1396, the Hanyangdoseong (Seoul City Wall) stretches along the ridges of four mountains—Naksan, Inwangsan, Namsan, and Bugaksan—embracing the old capital, Hanyang. It stood for over 600 years as both a symbol of royal authority and a fortress defending the city. At 5–8 meters high and 18.2 kilometers long, it showcases Korea’s unique masonry techniques and craftsmanship. Today, it remains the largest and longest-serving city wall still in existence, loved by both locals and travelers.

This spot is where Rumi and Jinu came together in "K Pop Demon Hunters".

The Hanyangdoseong, winding across four mountains of Seoul, was built at the dawn of the Joseon Dynasty to defend and define the capital. Although parts were damaged during Korea’s modernization, much of the wall remains, thanks to continued preservation efforts.

The Hanyangdoseong Museum is a cultural space dedicated to the history and stories of this ancient wall. It features permanent and special exhibitions, a research library, and educational rooms. As a bonus, the museum sits on a hill overlooking Dongdaemun, offering stunning views that make the visit even more special.

Originally built in 1396, it was rebuilt in 1453 and again in 1869, shaping the structure we see today. It's the only one of the four great gates with a half-moon-shaped outer wall (ongseong) and shows the elegant style of late Joseon architecture.

Today, the gate is at the heart of a bustling area full of markets, shops, and fashion. The ceiling of the gatehouse is decorated with a pair of dragons, and the gate itself is designated as Korea’s Treasure No. 1.

Gwangjang Market is one of Seoul’s oldest and liveliest traditional markets. It opened in 1905, originally known for its textiles and hanbok (traditional Korean clothing), playing a big role during Korea’s modernization.

Today, the market is all about amazing street food. Whether you're craving crispy bindaetteok (mung bean pancake), bibimbap (rice mixed with vegetables), mayak gimbap (finger-sized seaweed roll), tteokbokki (spicy rice cake), soondae (Korean blood sausage), or daring dishes like yukhoe (beef tartare) and sannakji (live octopus), this place has it all. The food stalls are run by generations of family vendors, each offering something full of heart and tradition.