Finally got out into the Boston harbor again. To explore some of the ruins from WW2. This time, I went two new islands, along with a fort and a U-boat watch tower, on the mainland nearby.
Red, going out
Green, coming in
Blue X, fort Revere
Yellow X, U-boat watch tower
First stop, Calf island. Nothing here related to the military. Old foundation from a house built in 1902. Unfortunately the house burnt down. (Vintage pictures of the house from Friends of the Boston Harbor Islands, thanks FBHI!)