Hey now, let's not start the PG bashing! I lived there for three years and have a bit of PG pride left. Is it going to National Harbor across the Potomac from Alexandria? If so, there will be lots of people to see it. Also, the new Wilson Bridge is supposed to have a bike path across the river, so you, too, can get there from the Mount Vernon Trail. The only problem is that there are spotty trail connections on the Maryland side, but there's folks working to fix that.