There are about 80,000 LED lights illuminate the park.
Americayama Park Illumination (アメリカ山公園イルミ) is a winter illumination happens in Americayama park. The illumination starts from the end of November to December 31. Light up starts from 18:00 to 23:00. It has a great view of Yokohama night scenery.
Tourist Info.
There is no parking. There is restroom.
Date: November to December 31.
Time: 18:00 to 23:00
Access
0. Yokohama Station.
1. use MinatoMirai Line to Motomachi-Chukagai.
2. walk south.
20 min
Let's learn MJER Iaijutsu. 
映画好き集まれ！ 
There are about 80,000 LED lights illuminate the park.