We are planning on taking our dog with us to DC b/c of dogsitting issues. Anyway, we're staying at Hotel Madera which is pet friendly. If we wanted to take our dog with us sightseeing, since we'll be mostly walking, will she be allowed in most tourist attractions that are outside, i.e. monuments and the Mall? Will public transportation allow dogs? If not, we're planning on having her enjoy the comforts of the hotel.