Why is Jeongdongjin a popular site for watching the sunrise on New Year’s Day?

I read on https://en.m.wikipedia.org/wiki/Jeongdongjin:

Jeongdongjin (also Chongdongjin) is a famous town near Gangneung, South Korea and one of the most popular sites in Korea for watching the sunrise on New Year’s Day.

Why is Jeongdongjin a popular site for watching the sunrise on New Year’s Day?