No. 1 Tourist Attraction in Busan: Nampo-dong
Nampo-dong draws hundreds of thousands of tourists year-round and is also one of the favorite haunts of Busan citizens. Every year PIFF Square is one of the main stages of the Pusan International Film Festival (PIFF). Whether you are looking for movie theaters or delicious restaurants, Nampo-dong has it all. Near Nampo-dong is the Yongdusan (Mt. Yongdu) Park, which is accessible by escalator. Wildly popular among tourists, the park is a must-see location for those who enjoy walking or wish to catch a birds-eye view of Busan from the park’s observation tower.
From 'korea tourism organization'

Jagalchi Market
Most famous and largest Fish market
in Korea
The market is located beside Nampo Port that means the fish can be delivered quickly and kept fresh. The market is famous as many elderly woman run the fish stands and have done so since the men were off fighting in the Korean War. A lot of restaurants come here to buy fish from wholesalers and even for the tourists visiting the markets, the prices are considerably cheaper than the supermarkets. - From 'korea tourism organization'

Gukje Market
Gukje Market or Nampodong International Market is a market in Sinchang-dong
Following the Korean War, refugees who had fled to Busan set up stalls in order to make a living, abd this was the beginning of the Gukje Market(gukje meaning "international"). The Gukje Market is on of largest markets; each alleyway is crowded with stalls, and it connects to the Bupyeong Market, Kkangtong Market, and other smaller markets. The market stocks such a wide variedty of goods, that you can find almost everything you need right here.
- From 'korea tourism organization'

BIFF Square
The Busan International Film Festival (BIFF) is one of the most significant film festivals in Asia
Major renovations took place ahead of the first Busan International Film Festival (BIFF) in 1996, and the newly transformed district was named BIFF Square on August 14, 1996
Having been remade as a cultural tourist attraction promoting the advancement of Korea’s film industry, the BIFF Square has contributed to Busan’s newfound status as an international cultural tourist city. The 428 meter-long street stretching from the Buyeong Theater in Nampo-dong to the overpass in Chungmu-dong was divided into “Star Street” and “Festival Street,” and on the eve of the festival each year the “Ground Opening the BIFF Square” is held on the street. During the ceremony events such as the hand printing of famous movie celebrities and Nunggot Jeomdeung (snow-flower lighting) take place. A district such as BIFF Square, crowded with first-run theaters in a city is rare not only in Asia but Europe as well, and for this reason it holds great potential. In recent years, the square has grown into a more complex area featuring not only movie theaters but also shops and leisure facilities, attracting growing numbers of young visitors and tourists.
- From 'korea tourism organization'

Yongdusan Park
Yongdusan Park, one of the most popular mountains in Busan
Yongdusan in downtown Busan, is one of the 3 well-known mountains in Busan. Its old name is Songhyunsan, which means a mountain has a view of the sea through the dense fine tree forest. Later the name has changed into Yongdusan. It came from its shape, which is similar to dragon head and people thought it has a spirit to defeat enemies coming over the sea.
On the mountain were shrine built by Japanese people during Japanese colonial role, but now are Cheokhwabi monument (the stone monument to the exclusion of foreigners from the country), Chunghontap (memorial tower for Korean war victims), 4.19 Revolution monument (the student's anti-government revolt), the statue of General Lee Sunsin(the great commander in Joseon Dynasty period(1392-1910)) and Busan tower.
During Korea war, displaced people built houses on it even on the top, but 2 times of big fires took all them away making it bald mountain. Since then, fierce efforts to plant trees have created such beautiful park. The name of the park was once Unam park in the time of the Liberal Party’s ruling but it went back to Yungdosan park after April revolution (1960). It is a place with beautiful scenery. Especially the night landscape from Busan tower is magnificent.