The most famous train in South Korea is the KTX (Korea Train eXpress), the country's premier high-speed rail system operated by Korail. Since its debut in 2004, the KTX has revolutionized travel in the peninsula, reaching speeds of up to 305 km/h (190 mph) and connecting Seoul to southern cities like Busan in just about 2.5 hours. For tourists, the "Gyeongbu Line" is the most iconic route, offering a smooth, futuristic ride through the Korean countryside. Beyond the high-speed KTX, there is also the SRT (Super Rapid Train), which serves a similar function but departs from Suseo in southern Seoul. For those seeking a more nostalgic or luxury experience in 2026, the "Haerang" is Korea's most famous luxury rail cruise, featuring high-end "hotel-on-wheels" accommodations and specialized regional tours. Additionally, the "V-Train" (Valley Train) and "Sea Train" are well-known tourist trains designed for sightseeing along rugged canyons and the eastern coastline. However, in terms of cultural significance and daily utility, the sleek, blue-and-white KTX remains the undisputed symbol of modern Korean transportation and technological progress.