What it is, what to see and when to go.
Marylebone runs north from Oxford Street to Regent's Park, between Edgware Road and Great Portland Street. It feels like a village inside the West End: Marylebone High Street has independent shops, cafés and the Edwardian galleries of Daunt Books, while the side streets are lined with red-brick mansion blocks and Georgian terraces. It is calmer than Oxford Street, five minutes away.
The big ticket is Madame Tussauds on Marylebone Road, at its current site since 1884. A short walk away, the Sherlock Holmes Museum fills a Victorian house at 239 Baker Street, with a 221B plaque on the door. Near Marble Arch, Frameless is an immersive digital art space. At the district's south-west corner stands Marble Arch itself, designed by John Nash and moved here from Buckingham Palace in 1851.
The quieter treasures are free or cheap. The Wallace Collection in Hertford House is free and open daily, with Fragonard's The Swing, Hals's Laughing Cavalier and one of the best armour collections in Europe. Wigmore Hall, opened in 1901, is a world-class chamber music venue; its Monday lunchtime recitals, broadcast live on BBC Radio 3, are among the best-value concerts in London.
When to go: book Madame Tussauds for an early slot, as queues build by late morning, especially in school holidays. Save the Wallace Collection for the afternoon, and try a Monday lunchtime or Sunday morning concert at Wigmore Hall. Stations: Baker Street, Marylebone, Bond Street, Regent's Park and Marble Arch.
Waxworks, Old Masters and Sherlock Holmes, ranked.

The world's most famous fictional address is a real Georgian townhouse, staffed by a Victorian 'policeman' and furnished as Holmes and Watson's rooms.
2A huge underground space where famous paintings are projected across walls and floors, so you step right inside Monet and Van Gogh.
3Come face to face with wax celebrities so lifelike you'll want a second look. Then step into the Chamber of Horrors, one of the attractions the…
4Step from a former townhouse hall into 25 galleries of French 18th-century paintings, fine furniture and porcelain. Entry is free, so you can…
5Hear chamber music, song and early music up close in a hall known for its sound. Step off busy Wigmore Street into a concert that feels like a…
6Stand before white marble built in 1827 as a grand state gateway to Buckingham Palace, designed by John Nash. Imagine the processions this archway…
A quieter base than the West End proper, with good boutique hotels and Regent's Park on the doorstep. See hotels on a map with live prices.
Museums, landmarks and hidden gems on one map, plus 17 day trips.