Technically outside of London proper, traveling down river to this university borough to stand on the Prime Meridian line and experience the city at a slower pace is worth the trip. Opt to take a River Bus, operated by Transport for London, on the Thames from the Tower of London to Greenwich and the journey can be a part of the experience.

The boat lets you off at the edge of Greenwich town, and from here, it’s about a 15 minute walk uphill to the 47241 in Greenwich Park. Along the way, you’ll pass Greenwich University and the 78165 ship, a 150-year old extreme clipper, now maintained as a historical attraction by Royal Museums Greenwich.

Time your ascent to the Royal Observatory grounds so that you arrive in the early evening as the sun is beginning to set. Home of Greenwich Mean Time (GMT), the Prime Meridian line is clearly marked and you are able to stand over it with one foot on either side. As the sky darkens, a green light beam extends from that line beyond into the sky and cuts across the distant London city skyline.

Make the most of your time in Greenwich by stopping for a pint and a pie or plate of fish and chips at 78166 along the banks of the Thames before taking the River Bus or the Tube back to Central London.