Boston is a great walking city, so you should have plenty to photograph. Downtown Boston is Historic, there are a ton of photographic possibilities, the State House, across from the State House, is the monument to the Mass 54th Regiment, (made famous by the movie Glory). You have the historic grave site or burial grounds, not to mention the Boston Commons and Boston Gardens (not the palatial home of the Bruins and Celtics) but the beautifully landscaped public gardens. Also you will see the Majestic Swan Boats inside the gardens too. Along that way is the Bulfinch Pub (Cheers), you have the Footbridge (Arthur Fiedler), if I'm not mistaken that will take you over to the Charles River. Along the Charles is a magnificent landscape that you can photograph, you will have on one side MIT's campus, you will have the Hat Shell, home of the Boston Symphony Orchestra and a host of other great photo opportunities. Along Boylston Street, Newbury Street and the entire Copley Square area, you will have excellent photographic spots to explore.
Boston is great because as its well known that its a World Class City, it also is very diverse. The neighborhoods are segregated and your taste in culture, life, music and sounds will dictate which neighborhood you should explore. South Boston is a predominantly White Irish area, you will find a culture that is strong in their Irish Pride, great place to visit and its on the water. Roxbury is a predominantly Black area and it is home to Roxbury Community College, Dudley Square, Malcolm X park and the former home of Malcolm X. It is a great neighborhood and it is home to the one of our Nations first Fire Dept's. Dorchester is a very mixed neighborhood, you will find groups from all places melded together in this old towne neighborhood. One of Boston's great treasures is this neighborhoods beautiful homes, from single family Victorians, to many, many 3 and 6 family dwellings, Dot is a great place to raise a family. The South End is the Cultural Center of Boston and this is the place to be for great Theatre, Music and other forms of Entertainment. It's also home to Boston's Gay and Lesbian Community. You will also find its home to many of Boston's Hispanic Community as well. Mattapan is a great area, it's mixed altough it has a large population of folks from the Carribean. Mattapan like Dot is a great place to raise family it's more suburban than urban, but it has it's own pulse. You also have Allston-Brighton, Hyde Park, Charlestown and a few other sub-divisions that all have their own uniqueness.
Coming from the Airport can be difficult, pay close attention to the road signs and you should be fine. There is a toll leaving the airport, so have two or three dollars in cash on you. Rush hour starts about 7:00am through 9:30am and picks up again around 3:30pm to 6:30pm of course we have our special brand of driving, so get used to it or take the T. We turn right on red here, please be aware of crosswalks, it's a $200.00 fine. If you need to read street signs, please pull over and get your bearings, Boston has some pretty agressive drivers.
Yes Boston has crime, we are not national leaders in any category that I know of, but its disturbing none the less. Roxbury has a high crime rate, but it's localized and very rarely spills into other areas of the city. Mostly its gang related violence and although there is always a chance and innocent civilian can be injured or worse killed, it is not common. You can travel most places relatively safely, but just use common sense: Don't flash cash or jewels or anything of material value; don't ask for directions from anyone on the street at night, if you need help, ask a cab driver or a bus driver; we do have our share of gypsy cabs and they are a great resource if you need to get somewhere. Lastly, the city has done a great job putting up emergency call boxes, if you feel threatened in any way, use them.