“Long a residential neighborhood with working-class roots, Petworth has seen an influx of upscale dining and retail options. Today, the Northwest neighborhood mixes charm and history. Here’s the best way to take it all in, with nothing more than two $20 bills and some change… [Rock Creek Church Cemetery] abuts President Lincoln’s Cottage, which was founded in 1851 as a home for veteran soldiers. President Lincoln frequented the home in the summer, when he would escape the mugginess of the city (good luck) and tend to executive matters. The cottage is open to tours ($15).” Read the full article.