1. Dongdaemun Design Plaza (DDP): Designed by the late Zaha Hadid, this futuristic structure is an iconic landmark in Seoul. It is composed of curved aluminum panels and glass, and is home to a variety of exhibitions, galleries, and events.
2. Seoul City Hall: Designed by Dutch architect Rem Koolhaas, this modern building features a sleek white facade, and is home to the Seoul Metropolitan Government.
3. Seoul Sky: This modern observation deck is located on the top of the Lotte World Tower, and features a glass-enclosed observatory.
4. Lotte World Tower: Designed by Kohn Pedersen Fox Associates, this 123-story skyscraper is the tallest building in South Korea.
5. Seoul Skygarden: This elevated park is located in the city center and features a variety of plants, sculptures, and pathways.