Donghae Haemul Kalguksu (동해해물칼국수)

Category: Restaurant - Seafood Restaurant
Nearest Subway Station: Heukseok Station (Line 9)
Distance from Subway Station: 88 meters (Exit 3)
District (gu): Dongjak-gu
GPS: 37.507841,126.963645 ↗
Description:
 
Kalguksu is usually made from seafood ingredients. However, sometimes instead of clams or anchovies, the broth is made from chicken stock instead. This restaurant's name is Donghae Haemul Kalguksu (East Sea Seafood Kalguksu) so I think it is safe to assume that they use seafood stock? No harm in asking first though :) Their kalguksu costs only 4,500 KRW per bowl. The store is open on weekdays from 10.30 to 8.00 PM. It closes at 3.00 PM on Saturday and is not open on Sunday. (source 1, source 2).

Location in Google Map:

Handel and Gretel - Super Junior

Category: Attraction - Hallyu
Nearest Subway Station: National Assembly Station (Line 9)
Distance from Subway Station: 200 meters (Exit 4)
District (gu): Yeongdeungpo-gu
Description:

Another in the series of cafes opened by family members of Super Junior (you can guess which group I like right now) is Handel and Gretel operated by the parents and younger brother of Yesung. This cafe is situated just in front of KBS so you can group your visits together with watching Super Junior Kiss The Radio and have a day full of Super Junior experience. It serves drinks, cakes and sandwiches and almost all of its customers are Super Junior's fans. (source)

UPDATE: As of October 2012, Yesung's family no longer operate this cafe.

Location in Google Map:

Banpo Bridge

Category: Attraction - Other
Nearest Subway Station: Express Bus Terminal Station (Line 3, 7, 9)
Distance from Subway Station: 840 meters (Exit 8-1)
District (gu): Seocho-gu
Description:

If you have seen the Seoul promotional video starring Super Junior and Girls Generation you must be familiar with the scene of them singing with a bridge with water fountains as the background. That bridge is Banpo Bridge, and it is famous for having the "Moonlight Rainbow Fountain" which holds the world record for longest bridge fountain. Banpo Bridge and the fountains are really one of Seoul's remarkable landmarks. If you have nothing planned for a night, consider experiencing the sounds and sights of this famous bridge. The bridge is best viewed from Banpo Hangang Park. More information on KTO Website.

The light show is not done all the time so please check the schedule at this site.

 source: visitkorea.or.kr

 animated gif credit: me

Location in Google Map:

KBS Building

Category: Attraction - Hallyu
Nearest Subway Station: National Assembly Station (Line 9)
Distance from Subway Station: 496 meters (Exit 4)
District (gu): Yeongdeungpo-gu
Description:

KBS is short for Korean Broadcasting Station a TV Station in Korea. KBS is among the TV channels most responsible for spreading the Hallyu Wave. It produces many variety shows that have become favourites among fans such as Dream Team, 1 Night 2 Days and Invincible Youths. The building is the venue for the weekly Music Bank music program broadcast. Recorded every Friday, fans flock this station for a glimpse of their favourite artists. Fans of Super Junior also come almost every weekday for the radio program "Super Junior Kiss The Radio" where the members Sungmin and Ryeowook are the DJs. The radio studio has a glass made of wall making the DJs and guests viewable to the public.

 source: wikipedia.org

Location in Google Map:

Shindongyang Chinese Restaurant

Category: Restaurant - Vegetarian Friendly Restaurant
Nearest Subway Station: Yeouido (Line 5, 9)
Distance from Subway Station: 86 meters (Exit 5)
District (gu): Yeongdeungpo-gu
Description:

This Chinese restaurant in Yeouido has its own vegetarian menu. There are around 60 dishes in that menu that also features the usual Korean version of Chinese dishes like jjajangmyun. The restaurant uses mushrooms and mock meats as meat substitutes. There is no English menu, so try to point and ask. Located on the highest floor (5th floor), this restaurant is open from 11 am to 2.30 pm and from 5.00 to 10.00 pm on weekdays, and 11.30 am to 9.30 pm on weekend. (source 1, source 2)

Location in Google Map: 

Bibigo - Yeouido

Category: Restaurant - Vegetarian Friendly Restaurant
Nearest Subway Station: National Assembly Station (Line 9)
Distance from Subway Station: 346 meters (Exit 1)
District (gu): Yeongdeungpo-gu
Description:

Bibigo restaurant serves customized bibimbap (rice with vegetable side-dishes) where diners can choose their own combination of rice type, topping and sauce. Customers can choose to not have topping for a vegetarian experience or to choose from a selection of toppings which includes tofu and shrimp. Price starts from 7,500 W. (source)

Location in Google Map: 

Garobee Well-Being Buffet

Category: Restaurant - Vegetarian Restaurant
Nearest Subway Station: Sinnonhyeon Station (Line 9) / Gangnam Station (Line 2)
Distance from Subway Station:  247 meters (Exit 4) / 420 meters (Exit 11)
District (gu): Gangnam-gu
Description:

Garobee Well-Being Buffet is a trendy vegan buffet restaurant situated in Gangnam. Accessible from Sinnonhyeon and Gangnam station, this restaurant serves variety of food including Korean temple foods and the more modern french fries. Lunch service is from 12-2.30 pm and dinner starts from 6-9 pm. Price per person is 15,000 W with a discounted price of 12,000 W for weekday lunches. (source 1, source 2)

Location in Google Map: