Namhansanseong café for solo laptop work and Bora Bora Lemonade: Sum

In short

Sum is a large bakery café set back on a mountain road in Namhansanseong-myeon, Gwangju, Gyeonggi. On a quiet weekday visit alone, the order was a Bora Bora Lemonade to sip while working, with mammoth bread and a yakgwa (honey cookie) butter bar packed to go, and the walk around covered the main building's floor-to-ceiling window seats, the annex second floor across the sky bridge, the music room and the rooftop. Sum is an easy stop to fold into a Namhansanseong drive.

Sum's Bora Bora Lemonade with bakery items

Good to know

Address
108-11 Ojeon-gil, Namhansanseong-myeon, Gwangju-si, Gyeonggi-do
Hours
Weekdays 10:00-20:30 / Weekends 10:00-21:30 (adjusted by season)
Last order
Weekdays 20:00 / Weekends 21:00
Parking
Spaces in front of the café, plus extra parking below
Amenities
High chairs available, self-service bar
Ordered
Bora Bora Lemonade, mammoth bread, yakgwa butter bar

as written by the visitor on Sep 15, 2026

I'm always hunting for cafés to work from, so I combined that with a Namhansanseong drive and stopped by Sum 〰️

How do you get to Sum near Namhansanseong?

Sum is a bakery café at 108-11 Ojeon-gil, Namhansanseong-myeon, Gwangju-si, Gyeonggi-do, near Ojeon-ri by Namhansanseong. There are so many cafés around Namhansanseong that I agonized over which one to pick before settling on Sum.

View of Sum tucked into the mountain road at Ojeon-ri, Namhansanseong

It really felt like heading deeper into the mountains, so the drive there already felt like a trip. Driving around Namhansanseong always puts me in a good mood 🍃 Even with the navigation on, the road just kept winding through the mountains and I started wondering if there was really a café out here — haha, kind of scary. The road is narrow so it might be a bit tricky for new drivers.

Sum's opening hours and reservations

  • Weekdays 10:00 - 20:30 / Weekends 10:00 - 21:30
  • Last order: weekdays 20:00, weekends 21:00
  • 🍃 Hours shift seasonally.
  • 🚙 Parking available 👶🏻 Baby chairs available
  • Reservations possible

Is there enough parking at Sum?

There's parking right in front of Sum, and there's another parking area just below it too!

Parking space in front of Sum

I went on a weekday so it was pretty empty, but apparently on weekends it fills up completely and there's even a wait.

What I ordered at Sum: Bora Bora Lemonade, mammoth bread and yakgwa butter bar

Walking in, the bakery case was right there on display! Bread smell wafting through the air 🥖🍰

Bakery display case inside Sum
Assorted breads on display at Sum
Bread trays at Sum's bakery corner
Sum's Bora Bora Lemonade with bakery items

I ordered the bestseller Bora Bora Lemonade along with a mammoth bread and a yakgwa (honey cookie) butter bar. I love the color purple, so ....~....💜 I packed the breads to go and just drank the lemonade while I worked. Gorgeous color and it tasted great too!

Packed mammoth bread and yakgwa butter bar
The packed-up photo

The packed-up photo

Inside and outside Sum: the mood of the café

The angular exterior has a ribbon on the door that's just so cute. A little red ribbon accent 🎁

Sum's entrance door decorated with a red ribbon

The moment I opened the door, the faint smell of freshly baked bread drifted out! Being a bakery café, the interior felt cozy, and with such big windows the green scenery poured in — so easy on the eyes 🍀

Sum's interior with green scenery through large windows
Window seats and interior decor at Sum
Sum's calm interior seating area

The space itself felt calm and warm. Every seat has a different window view, so wherever you sit there's some scenery to enjoy. Baby chairs are ready and the self-service bar is neatly arranged!

Self-service bar area at Sum

Sum's two buildings: main hall and annex

Namhansanseong's Sum has two separate spaces in total —

Window seats on the first floor of Sum's main building

This is the first floor of the main building, and the windows are so huge it feels wonderfully airy!

Quiet weekday seating in Sum's main building

Being a weekday, there weren't many people, so I could spend my time at ease. Getting away from the city into a quiet space like this felt like real healing 🍃

High-ceilinged second floor seating at Sum's main building

There are second-floor seats too, with high ceilings. So refreshing. Cross the sky bridge and you reach the annex!

Sky bridge connecting the main building and annex
View of Sum's annex across the sky bridge

The Jajak Stay space on the annex's second floor, across the way

Jajak Stay space on the annex's second floor
The Jajak Stay space on the annex's second floor, across the way
Quiet second floor seating in the annex
Window seat and drink on the annex's second floor

There was no one else in this space, so I stayed a while and had my drink.

Bora Bora Lemonade enjoyed on the annex's second floor
Stairs leading down to the annex's first floor

Annex music room, terrace and rooftop at Sum

Head down the stairs and you reach the annex's first floor, where there's a projector setup and a music listening room. Seems like a nice spot to sit quietly and enjoy some music.

Music listening room with projector on the annex's first floor

There's also plenty of outdoor terrace seating.

And there's a rooftop too!! This was so good. Once you get up there, the beautiful weather spreads out in front of you and the breeze drifts by — instantly puts you in a great mood!🍃

Mountain view from Sum's rooftop

After resting a bit at the café, I got back on the road for more driving 🚗 If you're looking for a nearby drive destination from Seoul on a nice day, how about a Namhansanseong drive? I'd definitely recommend stopping by Sum along the way 〰️

Where it is

Sum남한산성 카페 숨

108-11 Ojeon-gil, Namhansanseong-myeon, Gwangju-si, Gyeonggi-do, South Korea경기도 광주시 남한산성면 오전길 108-11

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