From its first pictorial poster in 1908, the Underground and then London Transport have promoted sightseeing in the capital. Posters encouraged visitors and Londoners alike to either take a conducted tour or to explore the city themselves. Well known landmarks
such as Nelson's Column and Buckingham Palace featured the most frequently, although lesser known places of interest were also publicised. Many posters focused on a specific sight, others simply encouraged visitors to 'See London by coach' or 'See London in
summer'. Green line coach and country bus services allowed sightseeing to extend beyond the city.