La Seyne-sur-Mer, historically known as Seyne, was initially a small fishing village dependent on Toulon, evolving significantly with the growth of its shipbuilding industry.

Geographically located on the Mediterranean coast, La Seyne-sur-Mer boasts diverse landscapes ranging from sandy beaches to rugged hills, contributing to its appeal as a tourist destination.

The population of La Seyne-sur-Mer has steadily increased over the past century, reflecting its economic growth and attractiveness as a residential area within the Toulon metropolitan area.

The shipbuilding industry, particularly the Société des Forges et Chantiers de la Méditerranée (FCM), played a pivotal role in shaping La Seyne-sur-Mer's economic and social development for over a century.

The closure of the shipbuilding yards in the late 20th century led to economic restructuring, with the town shifting towards tourism, services, and light industries.

La Seyne-sur-Mer houses the Villa Tamaris Pacha, a significant architectural landmark showcasing a blend of Moorish and Art Nouveau styles, which serves as an exhibition and cultural center.

The town's cultural identity is deeply rooted in its maritime heritage, celebrated through local festivals and traditions linked to fishing and seafaring.

Fort Balaguier, a 17th-century fortress overlooking the harbor, represents a crucial part of La Seyne-sur-Mer's military history and now functions as a naval museum.

The Cours Louis Blanc, a central avenue in La Seyne-sur-Mer, hosts a vibrant weekly market, showcasing local produce and crafts that reflects the region's culinary traditions.

La Seyne-sur-Mer experienced significant social and political unrest related to the decline of the shipbuilding industry, which led to labor movements and political shifts.

The town benefits from its proximity to Toulon, a major naval base and port, which influences its economic and social landscape.

Les Sablettes, a narrow isthmus connecting La Seyne-sur-Mer to Saint-Mandrier-sur-Mer, features beautiful beaches and gardens, attracting both locals and tourists.

While La Seyne-sur-Mer doesn't have a designated UNESCO World Heritage site within its immediate boundaries, its proximity to other culturally significant sites in Provence enhances its cultural value.

The Espace Chapiteaux de la Mer, a venue dedicated to circus arts and performance, signifies the town's commitment to contemporary cultural expression.

La Seyne-sur-Mer actively promotes sustainable tourism, aiming to preserve its natural environment and cultural heritage for future generations.