Gwangandaegyo Bridge, also known as Diamond Bridge, is a cable-stayed bridge located in Busan, South Korea. It spans 7.4 kilometers (4.6 miles) across the Gwangalli Beach and connects Haeundae-gu and Suyeong-gu.

The construction of the bridge started in 1994 and was completed in 2002. It was designed to withstand the strong winds and earthquakes that frequently occur in the area. The bridge has 6 lanes for traffic, with an additional pedestrian walkway and bike path.

One of the most striking features of the bridge is its lighting system, which consists of more than 100,000 LED lights. The lights change color throughout the night, creating a spectacular light show that can be seen from the beach and the surrounding areas.

The bridge has become a popular tourist attraction in Busan and is often used as a backdrop for photos and videos. Visitors can also walk along the pedestrian walkway to enjoy the views of the city and the sea.