Why Visit London?

There must be at least 2014 reasons to visit London, but that would make for a rather large web page, so here are 101 to get you started. (Many museums, galleries and parks are free of charge, although they may request a donation.)
Major Museums

The British Museum
The British Library (Access to the books is for members only, but it has several public exhibition areas)
The Science Museum
The Natural History Museum (including the Darwin Centre)
The Victoria & Albert Museum
The Imperial War Museum
The National Maritime Museum (including the Queen’s House)
The Museum of London
The Design Museum
The Royal Observatory
The Cabinet War Rooms (including the Churchill Museum)
The London Transport Museum
Smaller Museums

Sir John Soane’s Museum
The Bank of England Museum
The Brunel Museum
The Museum of Brands, Packaging & Advertising
The Geffrye Museum
The Museum of Childhood
New London Architecture
The Sherlock Holmes Museum
The Bramah Museum of Tea & Coffee
Vinopolis
The Wellcome Collection
Major Galleries

The National Gallery
The National Portrait Gallery
Tate Britain
Tate Modern
The Hayward Gallery
Dulwich Picture Gallery
Royal Palaces

The Tower of London
Hampton Court Palace
The Banqueting House
Kensington Palace
Kew Palace
Buckingham Palace
Parks & Gardens

Kew Gardens
Greenwich Park
Hyde Park
Kensington Gardens
St James’s Park
Richmond Park
Regent’s Park
Chelsea Physic Garden
Hampstead Heath
Performing Arts

The National Theatre
The Royal Opera House (including the Royal Ballet)
Sadler’s Wells
Shakespeare’s Globe
The Old Vic (and also the Young Vic)
The O2 (formerly called the Millennium Dome)
Zoology

London Zoo
London Aquarium
London Wetland Centre
Shopping

Harrods
Foyles
Selfridges
Fortnum & Mason
Harvey Nichols
Hamleys
Borough Market
Portobello Market
Tourist Traps

Madame Tussauds
The London Eye
The London Dungeon
Ecclesiastical

St Paul’s Cathedral
Westminster Abbey
Southwark Cathedral
Westminster Cathedral
St Martin-in-the-Fields
Lambeth Palace
Ships

HMS Belfast
The Cutty Sark
The Golden Hinde (replica)
Waterways

The River Thames
The Thames Barrier
Tower Bridge
The Millennium Bridge
London Bridge
Regent’s Canal
Sport

Wembley Stadium
Lord’s
The Olympic Park (under construction)
Twickenham Stadium
The All England Lawn Tennis Club (Wimbledon)
Other Classic Architecture

The Houses of Parliament (including Big Ben)
Horse Guards Parade
The Guildhall
The Monument
The Albert Hall
Nelson’s Column
The Royal Exchange
St Pancras International Station
London Wall (only fragments remaining)
The Royal Naval College
Other Modern Architecture

The BT Tower
30 St Mary Axe (the “Gherkin”)
The Lloyd’s Building
London Bridge Tower (the “Shard of Glass”, currently under construction)
City Hall
Canary Wharf
Conventions

The 2014 World Science Fiction Convention? (it’s up to the voters in 2012)