The Astronomy Department has offices at 60 Garden Street and 160 Concord Avenue (M Building), Cambridge, MA.
Harvard Station: The Harvard-Smithsonian Center for Astrophysics is about a half-mile and a 15-minute walk west of Harvard Square. Leave the Harvard Station by the Church Street exit, turn right on Massachusetts Ave., then left on Garden Street at the Cambridge Common. Bear right after the Sheraton-Commander Hotel, and the CfA is another two blocks on the left.
Porter Station: walk down Massachusetts Avenue back toward Harvard Square, 3 blocks, turn right on Linaean Street and keep walking (6 blocks) straight on into the CfA's entrance driveway.
From the bus or trolley: Take the 74 or 78 bus or 72 trackless trolley from the lower level of Harvard Station and ask to be let off at Manassas Street.
From the Airport: Take the Silver Line to South Station. Transfer to the Redline Inbound train towards Alewife. Comng from Logan the Silver Line is free. (Fare is $2.00 to the airport.) Exit at either Porter Square or Harvard Square and follow directions above. There are taxi stands in Harvard Square.
Taxi fare from the airport to the CfA is $40-$50.
Note: On the MBTA trains Inbound means towards Park Street Station.
From the northwest: Take Route 2 to the Alewife-Concord Rotary, follow Concord Avenue into Cambridge and cross Huron Avenue, turn left on Madison Street and then right into the CfA's rear parking lot.
From Boston or to the south: Take Storrow or Memorial Drives to the Harvard Square exit (JFK Street), continue through the Square and up Mass. Ave. to turn left at Linnaean Street, which intersects Garden Street right at the front entrance driveway of the CfA.
From the north: Take 93 South to Memorial Drive and follow directions from above. From the west: Take the Mass. Turnpike (US 90) to the Allston-Cambridge exit, cross the Charles River, and turn left on Memorial Drive immediately over the River Street Bridge. Then follow directions from above.
You may purchase a parking pass from the Harvard College Observatory business office if you want to park in the lot at 60 Garden Street during the day. The HCO business office is located at B-115. Parking is $4.00 for two hours, $8.00 for four hours, or $13.00 for all day.
If you are visiting 160 Concord Avenue you may purchase a parking pass from Muriel Hodges in room M-333. Passes are $7.00 for half day and $13.00 for full day.
Non-resident street parking is available on Huron Avenue and Sherman Street.