Photo/Illutration Zelkova trees lit up with blue LEDs in Yoyogi Park for the illumination show in Tokyo’s Shibuya Ward on Dec. 18 (Sayuri Ide)

A magical world of blue is lighting up the winter nights in a popular area in Tokyo as a seasonal illumination show returned to the capital for the first time in three years.

The show, called “Ao no Dokutsu (blue cave) Shibuya,” features about 600,000 blue LEDs along an 800-meter stretch between Shibuya Koen-dori street and rows of zelkova trees in Yoyogi Park in Shibuya Ward.

Part of the ground is covered with sheets that reflect the lights to make it look like a cave that has water running through it.

On Dec. 24 and 25, visitors can see their handwritten messages or pictures on dedicated devices projected on a board as to create a massive Christmas card.

The illumination event will be held nightly from 5 p.m. until 10 p.m. until Dec. 25.

It had been canceled the past two years due to the novel coronavirus pandemic.