Discover the Capital 1 Day Hop-On Hop-Off or a 2 Day Hop On Hop Off. Exciting daily departures from 10 am to 4 pm during low season. Hop aboard one of our authentic London-style double decker buses for a one-day or 2 day guided city tour. The tour begins at the Gray Line Ottawa kiosk at the corner of Sparks & Elgin streets and the tour runs in a continuous loop that permits you to hop on and off at your favorite sites. Visit at your own pace and get back on to continue the loop tour. On this tour you will discover over 75 landmarks of this beautiful city. Let our professional tour guides introduce you to the historical landmarks, exciting attractions and beautiful scenery that Canada's capital has to offer. You will be driven along Confederation Boulevard and Sussex Drive where you will view the most popular landmarks in Ottawa, including the famous residence of the Prime Minister and the Governor General residence.