Richard's favourite London walks - The Secret City.

Hidden away behind the busy streets and main thoroughfares of the old city of London there exists a secret city of narrow alleyways, timber-framed buildings and hidden courtyards that really make for an enjoyable and original experience. On this one of our London walking you will be able to leave behind the hustle and bustle of the 21st century and step into this bygone world to visit places that have changed little in over a hundred years. You will gaze upon the Tower of London, and learn how it nearly came to grief in the 19th century; explore Victorian London’s most beautiful market, which is featured in the Harry Potter films; go inside London’s medieval palace; enjoy the ‘holy gloom’ of London’s oldest parish church (c1123); and discover a side of London you would never dream still existed. If you have time for only one of Richard's favourite London walks, then this is the one to take. It combines fascinating history with sights that will inspire you to want to return and explore the area in much more depth.

Start: Tower Hill Station (Circle and District Underground lines).

Finish: St Paul’s Station. (Central Line).

Length: 2 miles (3.2 km).

Duration: 21/2 hours.

Best of times: Weekends, and times when the Guildhall Art Gallery and Museum of London are open.

Worst of times: Evenings.