using System;

using System.Linq;

public class Program

{

    public static void Main()

    {

        var people = new[]

                    {

                        new {Name = "Jennifer", City = "London"},

                        new {Name = "Alton", City = "London"},

                        new {Name = "Adam", City = "Paris"},

                        new {Name = "Milford", City = "New York"},

                        new {Name = "James", City = "Tokyo"},

                        new {Name = "Rachael", City = "Paris"},

                    };

​

        var distinctCities = people.Select(p => p.City).Distinct();

        foreach (var city in distinctCities)

        {

            Console.WriteLine(city);

        }

    }

}