That looks like an ordinary slab of cement vandalised by some graffiti but it's not !
This four ton block is a permanent display of Cold War history installed in Boston !! It is a part of Berlin Wall that was gifted by the German government. So I wasn't born when the wall was built, wasn't even there at the time of its fall and have never been to Berlin but I've seen the Berlin Wall. Isn't that awesome 😎