On line tickets, Union Station and @ the Washington Welcome Center @ 10th & E St. NW. Only during the weekdays can you purchase Trolly tickets inside the store. On evenings and weekends go to the ticket booth on the corner of 10th and E street.
But a ticket online at trolleytours.com or at 1001 E St NW and you can get on and off at all the designated stops all day.
This bus stops at union station in D.C.
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