async Task, foreach and list, waits

Program.cs

using System;
using System.Collections.Generic;
using System.Net.Http;
using System.Threading.Tasks;

namespace ItsBigItsHeavyItsWood
{
    class Program
    {
        static void Main()
        {
            var urlsToDownload = new[]
            { 
                "http://www.google.com/", 
                "http://www.microsoft.com/", 
                "http://www.apple.com/", 
            };

            var allDownloadTasks = new List<Task>();
            foreach (var url in urlsToDownload)
            {
                var thisDownloadTask = DownloadUrl(url);
                allDownloadTasks.Add(thisDownloadTask);
            }

            Task.WaitAll(allDownloadTasks.ToArray());
        }

        private static async Task DownloadUrl(string url) 
        { 
            var client = new HttpClient(); 
            Console.WriteLine("Starting to download url {0}", url); 
            var contents = await client.GetByteArrayAsync(url); 
            Console.WriteLine("Downloaded {0} bytes", contents.Length); 
        }
    }
}