public override void Configure(INancyEnvironment environment) { var allCultures = CultureInfo.GetCultures(CultureTypes.AllCultures) .Select(x => x.Name) .ToArray(); var supportedCultures = allCultures .Concat(allCultures.Select(x => x.ToLowerInvariant())) .Concat(allCultures.Select(x => x.ToUpperInvariant())) .Distinct() .ToArray(); environment.Globalization(supportedCultures, "en-US"); base.Configure(environment); }