Retro sur Mer is Belgium's premier seaside vintage festival, held annually in Wenduine (part of De Haan) on the Belgian coast. This free-entry event transports visitors back to the swinging '50s and '60s with rock 'n' roll, swing, and jive vibes. Highlights include a massive showcase of classic oldtimers and vintage cars, lively live bands and DJs, dance lessons, retro beauty boudoirs and barbershops, a bustling vintage market, nostalgic kids' activities, and delicious period-inspired food and cocktails. Attracting thousands for a joyful weekend of music, dancing, and nostalgia, the 2026 edition marks its 10th anniversary from August 7–9.