1 - Rocky Narrows Park – This location is guarded by two very powerful stunted yao guai and you shouldn't attack them until you're stronger. You can check the park once they're dead to find some interesting objects, including a trunk filled with ammunition and weapons.
2 - Graygarden – There are some gardens and a treehouse here and the entire operation is maintained by robots. You can talk to one of them - Overseer White and take a question. With other you can trade, it is selling resources, ammunition and other goods.
3 - Greygarden Homestead – Abandoned House. You will find some food inside and locked door (expert). Inside the room will be more food and safe (advanced).
4 - ArcJet Systems – This is a large building and you won't encounter any enemies around it. You can use a door to enter the building (it's a separate area). You will find a lot of valuable items and Tesla Science magazine there.
5 - Bethany's Cabin – You will find Bethany here. She can heal you or trade with you. Don't go into the cabin, it is highly radioactive. Wait when she will be outside.
6 - Federal Ration Stockpile – Building on the surface and complex of rooms underground is in the grip of bandits. You will find many valuable items here and military magazine, which help you to sneak.
7 - Weston Water Treatment Plant – Large pumping station. On the surface you will meet several super mutants. Inside lives large group of mirelurks. Before the exploration you have to pump the water out.
You will find many valuable items here, including Picket Fences magazine, which allows you build new element in your settlements.
8 - Fiddler's Green Trailer Estates – This place is controlled by large group of Ghouls. You will find here T-60 power armor, Live & Love magazine and other stuff.
9 - Relay Tower 0BB-915 – Watch out for Ghouls. You can activate the tower and get several new radio frequencies. On the north-west from the tower you will find entrance to bunker, which is secured by explosives. There is some food inside.
10 - Fort Hagen Filling Station – Characteristic gas station. There is nothing interesting around.
11 - Fort Hagen – Main building of the city, controlled by large group of Synths. You can find a lot of valuable items here.
12 - Fort Hagen Satellite Array – Tower is guarded by 2 Yao Guai. Apart from them, there is nothing interesting.
13 - Greater Mass Blood Clinic – Hospital is guarded by insects. In the basement you will find many medicines, especially blood, and ammo. There is also key to the door.
On the first floor is room, where you can go after unlocking terminal. There is many units of blood, ammo and Massachusetts Surgical Journey magazine.
14 - Boston Mayoral Shelter – Pretty big shelter guarded by large group of Synths and Death Claw. Go there only if you have high-level character. You will find, among other things, Astoundingly Awesom Tales magazine inside.
15 - Mass Pike Interchange – Highway section gripped by strong group of bandits. You will find power armor and Grognak the Barbarian magazine here.
16 - Workshops – You will find T-60 power armor here.
17 - Truck – Use the terminal to activate nuclear bomb and enjoy the view.
18 - Outpost – Watch out for insects. You'll find T-60b power armor with fuse core here. Use to to kill 2 Death Claws, which are on the east.
There is many packs of cigarettes in trailer.
19 - Forest Grove Marsh – Depopulated torn occupied by large group of Ghouls. To avoid radiation and find most of valuable items walk on the roofs.