Gyeyang Station~Jeongseojin

Gyeyang station is the northern terminus of Line 1 of the Incheon Subway. It is also a railway station on the AREX, a railway linking Seoul Station and Incheon International Airport.In 2007, station for Incheon subway line opened and then AREX opened on March 23.

The National Institute of Environmental Research, or NIER, is a research agency operated by the South Korean government. Its president is Seong-Kyu Yoon. It is charged with environmental research, education, international cooperation, and setting criterion levels for various pollutants. The main building for the institute is located in Gyeongseo-dong, Seo-gu, Incheon.

Geomam station is a railway station on AREX and Incheon Subway Line 2. Since June 2014, the KTX train operates from Incheon International Airport to Busan or Mokpo. It has stopped operating KTX since March 2018. In September 2018, Korail officially announced that they would stop operating KTX to Incheon International Airport due to lack of passenger use.