One of the best tours we have done, so much more than I expected, not going to say any more than just do it if you are in Washington, you won't be disappointed !
The main tip I would give my fellow future travellers is.
Make sure you have a phone number to call someone.
We arrived at our pick up point, waited and waited, no one showed up!
We called the guide, who bless him was there within 10 mins.
The tour was good , the guide Liam was excellent.
Bit of a let down from Viator.
Very interesting explains how their constitution came about and how their government works. The guides verynowledgeable with good sense of humour.