It's a charming, historic city. And you can travel green because once you get to Alexandria, you don't need your car at all. Park it and hop on the picturesque -- and free -- trolley to get around town. Many of the shops, restaurants, attractions and hotels in historic Old Town are within walking distance of each other and the trolley stops.
The new King Street Trolley runs up and down the main street in Old Town. Remember -- it's free, so you save gas, the green in your wallet, and the environment because you're not spewing stuff out of your tailpipe. The trolley operates daily from 10 a.m. to 10 p.m., with frequent stops along King Street from the Potomac River to the King Street Metro.
You can also visit nearby Mount Vernon, Georgetown and National Harbor without driving, too. Take the Water Taxi instead, for great views and a great breeze on a hot summer day. The Water Taxi leaves Alexandria and National Harbor every 30 minutes, also from 10 a.m. to 10 p.m. daily.
Actually, leave your car in Alexandria and take the Metro to Washington, D.C. It's just four stops away, and you'll save gas. That's called green travel.