From I-395 South: Take exit 4, going westbound on Seminary Road (you will crossover on I-395 if you are coming northbound). Immediately upon entering Seminary from the ramp, you will need to move toward the left lanes so you can make a left at the 2nd light, onto North Beauregard Street. Once on North Beauregard, you will travel one block. Make a left at the first light onto Mark Center Drive. Make an immediate right. The 2001 N. Beauregard building will be on your left. Park in the garage (fee parking) across the street, next to 1801 N. Beauregard Street. Mack-Sumner Communications is on the 4th floor, suite 420.