There are two main areas in Arlington that have the best lights in town. The first is in East Arlington over by and the, just south of on Route 2A.
Swing by Lake Street for a series of beautiful displays all the way down the road. Immediately next to Lake Street, Orvis Street also has a series of Christmas lights adorning both sides of the street. At the end of Orvis, Freeman Street boasts another group of lighted homes.
Jump across 2A and Broadway to get over to River Street which has many houses lit up on either side much like Lake. The neighboring roads of Rawson and Park Street also contain a lot of glowing adobes. Intersecting Rawson and Park Street is Exeter Street which also has a bunch of houses lit up.
If you begin on Lake Street, heading towards 2A, you can move your way up and down Brooks Street. From their you can exit onto Orvis, with Freeman intersecting Orvis. Once your done in that neighborhood, jump over 2A and Broadway until you reach River Street, take a left off of River to make your way over to Rawson and Park Street, and finally, Exeter.
The second great way to check out some of the best lights in Arlington is to follow Cambridge Street. Beginning at 194 Mystic Street you will be greeted by a large, glowing manger scene. A few houses down towards Winchester, a huge pine tree, 40 feet tall is covered with lights all the way to the top. Continuing down Mystic (which becomes Cambridge Street), dozens more houses are all bright until you make your way into Winchester. Keep driving though, because at 242 Cambridge Street, Mahoney's Farm is all aglow and shining with a variety of displays that rival anything seen in all the surrounding towns.
Have a safe and happy holiday and enjoy the displays!