Ulsan (Korean pronunciation: [ul.s͈an]), officially the Ulsan Metropolitan City, is South Korea's seventh largest metropolis with a population of over 1.1 million. It is located in the south-east of the country, neighboring Busan to the south and facing Gyeongju to the north and the Sea of Japan (East Sea) to the east.

Ulsan is the industrial powerhouse of South Korea, forming the heart of the Ulsan Industrial District, which is home to the world's largest automobile assembly plant operated by the Hyundai Motor Company, the world's largest shipyard operated by Hyundai Heavy Industries and the world's largest^{[citation needed]}oil refinery, owned by SK Energy. In 2008, Ulsan had a GDP per capita of $63,817, the highest by far in South Korea.

Ulsan is divided into 4 gu (districts) and 1 gun (county).

Ulsan is bounded on the east by the Sea of Japan. It is not far from Busan, at only 70 km to the south.

Ulsan has a monsoon-influenced humid subtropical climate (Koppen Cfa/Cwa), with somewhat cold but dry winters, and hot, humid summers. Monthly means range from 2.0 °C (35.6 °F) in January to 25.9 °C (78.6 °F) in August, with diurnal temperature ranges generally low. Its location on the Korean peninsula results in a seasonal lag, with the warmest days being in August and averaging very near 30 °C (86 °F). Precipitation is relatively low in the winter months, but is made up by the high rainfall falling from April to September.

Park Jaebeom (Hangul: 박재범; Hanja: 朴載範, born April 25, 1987), also known as Jay Park, is a Korean-American recording artist, dancer, rapper, music producer, b-boy, songwriter, composer and actor. He was the former leader of the South Korean boy band 2PM, and is a member of the Seattle-based b-boy crew Art of Movement (AOM).

Born in Seattle, Washington, Park showed great interest in hip hop music and breakdancing at a young age. Park was raised in Edmonds, Washington where he attended Edmonds Woodway High School. In 2004, he auditioned in Seattle, Washington, for Korea-based JYP Entertainment (JYPE), which brought him to Korea in January 2005, to receive further training in dancing, rapping, singing, and the Korean language.

Park first appeared through Mnet's Hot Blood Men, a documentary-style reality program that showed the future members of idol groups 2AM and 2PM in training. Park, finishing with the most fan votes, was given the position of 2PM's leader. On September 4, 2008, 2PM debuted with the song "10점 만점에 10점" ("10 Points Out Of 10") on music program M! Countdown after the release of their first mini-album, Hottest Time of the Day, a few days prior.