Mers-les-Bains is a French commune located in the department of Somme in the Hauts-de-France region. It is a popular seaside resort known for its beautiful villas, sandy beaches, and colourful seafront. The town is situated on the English Channel and is approximately 150 km from Paris.

The architecture of Mers-les-Bains is characterized by the stunning Belle Époque villas that were built in the late 19th and early 20th centuries. Many of these grand houses have been preserved and restored, providing a glimpse into the town's rich history. The seafront promenade is lined with these colourful villas, which feature intricate balconies, turrets, and ornate decorations.

In addition to the beautiful architecture, Mers-les-Bains is also home to several museums, including the Musée du Tréport-Mers, which showcases the town's maritime history, and the Musée des Traditions Verrières, which focuses on the art of glassmaking. The town also has several parks and gardens, including the Jardin d'Embarquement, which offers stunning views of the sea.

Mers-les-Bains is a popular destination for water sports enthusiasts, with opportunities for swimming, sailing, windsurfing, and kiteboarding. The beach is also a great spot for fishing, with mackerel, sole, and sea bass among the many species that can be caught.