Hongdae Free and Hope Market

Hongdae Free and Hope Market
Category: Attraction - Shopping
Nearest Subway Station: Hongik University Station (Line 2, AREX)
Distance from Subway Station: 546 meters (Exit 9)
District (gu): Mapo-gu
GPS: 37.552378,126.923352 ↗
Description:

If you will be in Seoul anytime from March to November and you are a fan of handmade and unique crafts, don't forget to visit these unique flea markets open only on Saturday and Sunday. These markets don't sell second hand items, but handcrafted accessories, clothes, caps, paintings, photographs and many other more. Most of the vendors are students of the nearby Hongik University. Saturday is the day for "Free Market" while "Hope Market" is on every Sunday. Both are open from 1PM to 6PM at the same location. (source 1, source 2)
Hongdae Free Market caught by Daum Road View.

Casablanca Sandwicherie

Casablanca Sandwicherie
Category: Restaurant - Halal Restaurant
Nearest Subway Station: Noksapyeong (Line 6)
Distance from Subway Station: 642 meters (Exit 2)
District (gu): Yongsan-gu
GPS: 37.541457,126.987066 ↗
Description:

When it comes to Halal restaurants in a non-Muslim majority country like South Korea sometimes we have to do some allowances - food are either expensive, taste can be better or the locations somewhere not conveniently reached. Casablanca Sandwicherie is actually only guilty the last crime: not being a few steps away from the nearest subway station. But if the numerous reviews of how good their sandwiches are to be believed, I'll gladly walk the 642 meters from Noksapyeong station to their door (or maybe take a taxi).
Casablanca Sandwicherie serves a few type of sandwiches: vegetarian, Moroccan chicken, omelette, shrimp and lamb. Sandwich starts from only 4,000 KRW. The restaurant is open from 5 PM everyday except on Monday. (source 1, source 2, source 3)

Namsan Tower - How to Get There by Bus

Namsan Tower - How to Get There by Bus
Category: Attraction - Nature
Nearest Subway Station: Myeongdong (Line 4)
Distance from Subway Station: 41 meters (Exit 2)
District (gu): Jung-gu
GPS: 37.560823,126.986621 ↗
Description:

Previously this site shows how to get to Namsan Park and Tower by taking the cable car. However the journey to the cable car station itself is challenging with the distance and being a bit hilly. Of course the price is also expensive with the current posted price being 8,000 KRW for a round trip and 6,000 KRW one way. Waiting time can be long too if it is a public holiday in South Korea.
Luckily you can also take a bus up and down the Namsan Mountain. Namsan Mountain is served by yellow (circular) buses. There are three different buses that go up: Namsan 02, Namsan 03 and Namsan 05. Each bus serves different routes in Seoul.
This entry shows how to take the bus Namsan 05 from a bus stop in Myeongdong Station. The bus stop is just a few steps from the Exit 2 of Myeongdong Station. The bus stop is next to Prince Hotel
Even though the bus category is Yellow Bus, the Seoul government has changed most of the buses going up Namsan Mountain to the environmentally friendly electric buses that look like this:
Your bus number is 05 though. Don't take the wrong one from Namsan Mountain!
Or the old bus may come first. Don't snub this bus! It goes the same route. :)
Bus fare is only 850 KRW when using T-Money. Journey will take around 30 minutes and the bus interval is every 18 minutes. Because it is a circular line, you can also take the same bus from Namsan Mountain to this Myeongdong bus stop back.

Cheongchun Cat Cafe

Cheongchun Cat Cafe
Category: Attraction - Other
Nearest Subway Station: Hongik University Station (Line 2, AREX)
Distance from Subway Station: 616 meters (Exit 9)
District (gu): Mapo-gu
GPS: 37.552998,126.923114 ↗
Description:

One of the most ubiquitous sights in Seoul is the many coffee houses making business in this town. You have the major franchises like Starbucks and also many independent and unique coffee houses. Coffee houses that have unique theme are also numerous in Seoul like the Hello Kitty Coffee House featured before. But this time how about something less cartoonish and more I-will-leave-my-furs-on-your-clothes variant?
Cheongchun Cat Cafe / YCat Cafe (previously also known as Gio Cat Cafe) is a coffee house where the main spotlight is not on their brews of Caramel Macchiatto or Espresso, but the many cats it houses! Pay an entrance fee and you'll get a choice of drinks and allocation of table. Then you can do your best to tempt these furry buddies to get into your lap, pet and play with them. They even have a "cat menu" that showcases the many different breeds of cats they have. Check the sources for more info (and a video) (source 1, source 2, source 3)