조계사 is a Zen Buddhist temple in Seoul that was established in 1395. It’s surrounded with 500 year old Locust and Baeksong trees (Korean White pines), one of the locust tress is over 85 feet (26 meters). One of the white pines (Baeksong trees) is a natural monument. Around the temple are also a lot of buddhist speciality shops.
A friend and I walked past the temple after she told me she’d noticed all of the lanterns in the morning. They were up in celebration for Buddha’s birthday.