1. Come face-to-face with a roaring T-Rex at the Natural History Museum.
2. Enjoy a candlelit tour of the atmospheric Sir John Soane's Museum.
3. Explore the fascinating history of England's capital at the Museum of London.
4. Hold some gold at the Bank of England Museum.
5. Be inspired by the beautiful objects on display at the Victoria and Albert Museum.
6. Learn about the history of the River Thames at Museum of London Docklands.
7. Discover the life and works of one of Britain’s most inspiring designers at the William Morris Gallery.
Weird and Wonderful
9. Marvel at the Jar of Moles at the Grant Museum of Zoology.
10. See the over-stuffed walrus at the Horniman Museum.
11. Be wowed by the Rosetta Stone and Egyptian mummies at the British Museum.
12. Be dazzled by the 400 exhibits - including a Spitfire and a Harrier Jet - on display at the Imperial War Museum.
13. See full-size dinosaurs at Crystal Palace Park.
14. See what life was like for the poor and destitute of London's East End during the late 1800s in The Ragged School Museum.
15. Take your pain away with a visit to The Anaesthesia Museum, which charts the history of anaesthesia from 1846 to the present day.
16. Browse old sewing machines at the London Sewing Machine Museum.
17. See pickled creatures in jars and fascinating deformed skeletons at the Hunterian Museum.
18. Go to the Wellcome Collection to see a bunch of marvellously weird objects, including an ancient mummy, Napoleon's toothbrush and Darwin's walking stick.
19. Relax on Wimbledon Common where you'll find ponds, a nature trail and a windmill.
20. Go deer-spotting in dreamy Richmond Park.
21. See the Prime Meridian line for free at Park Vista.
22. Bliss-out in Bushy Park, home to 320 free-roaming deer.
23. Burn off some calories by jogging around Hyde Park, which covers 350 acres (142 hectares).
24. See the Peter Pan statue at Kensington Gardens.
25. Watch the pelicans being fed every day at 2:30pm at St James's Park. Also look out for water birds, owls, woodpeckers and bats.
Great For Kids
26. Take the singing elevator (JCB Glass lift) in the Royal Festival Hall.
27. Meet the alpaca at Vauxhall City Farm.
28. See farm animals at Mudchute Farm and Park.
29. Harry Potter fans can push a trolley through to a magical world at the wall marked Platform 9 ¾ at King's Cross.
30. Watch the skateboarders performing death-defying tricks under the Southbank Centre.
31. Go mudlarking - the city equivalent of beachcombing - outside Gabriel's Wharf or on the City of London side of the Millennium Bridge, where you can check the surface for old clay smoking pipes and bits of pottery. Check the tide tables in advance.
32. Watch the street entertainers in Covent Garden.
33. Little ones can be pirates for the day on Captain Hook's huge wooden pirate ship at the Diana, Princess of Wales Memorial Playground.
34. Splash about in Queen Elizabeth Olympic Park's fountains.
35. See amazing exhibits - like the Apollo 10 command capsule and Stephenson’s Rocket - at the Science Museum.
36. Explore the V&A Museum of Childhood, which houses the UK’s national collection of childhood objects that date back to the 1600s.
37. Watch the daily Changing the Guard ceremony outside Buckingham Palace.
38. Follow in the footsteps of The Beatles by crossing the famous Abbey Road zebra crossing that's featured on the eponymous album cover.
39. Watch Tower Bridge open. See continuous images of the 19th-century landmark on our live video feed.
40. Meet the stone lions at Trafalgar Square.
41. Explore Queen Elizabeth Olympic Park with it gorgeous parklands, waterways and striking venues.
42. Take a selfie in front of the bright lights of Piccadilly Circus.
43. Listen to the chiming of Big Ben.
45. Soak up sweeping views across the River Thames and Central London from Greenwich Park.
46. Enjoy stunning views across London from Alexandra Palace, set in 196 acres of parkland.
47. Celeb-spot while looking out across the capital from Primrose Hill.
48. Get snapping with our guide to London's top photo opportunities.
49. Stroll to the top of Hampstead Heath's Parliament Hill for marvellous views across London.
50. Take a stroll along the picture-pretty South Bank
51. Follow the towpath through tranquil Little Venice to discover a slew of waterfront cafes and pubs.
52. Walk across Millennium Bridge from St Paul's Cathedral to Tate Modern and Shakespeare's Globe.
53. Stroll through the lush riverside village of Richmond; start at the White Cross pub and continue past the rural idyll of Petersham Meadows, until you reach Ham House.
54. Take a shady walk amongst the 35,000 monuments of Brompton Cemetery, including one of suffragette Emmeline Pankhurst.
55. Escape the city in the ancient woodland of Highgate Wood.
56. Spot rare plants and insects in Epping Forest.
Flowers and Gardens
57. Chill out in the Barbican Conservatory which homes tropical plants, trees and fish.
58. Achieve Zen in Kyoto Japanese Garden in Holland Park.
59. Take a look at the Watts Victorian memorial in Postman's Park, which features in the movie Closer.
60. Be dazzled by the wildflowers at the Phoenix Garden in London's West End.
61. Flower fans can soak up the floral colours and aromas of Columbia Road Flower Market.
62. Under 16s can enjoy cheap entry to Kew Gardens, the world's most famous garden.
For Culture Vultures
63. See prop-makers and theatre designers working behind-the-scenes at the National Theatre by walking along its Sherling High-Level Walkway.
64. Watch a film, play or band for free at More London Free Festival at The Scoop.
65. Visit neon wonderland God's Own Junkyard, which is chock-full of vintage neon signs and old movie props.
66. Take a peek at London's public and street art, including works by guerrilla artist Banksy.
67. Feast your eyes on literary treasures like the Magna Carta and original Beatles lyrics at the British Library.
68. See contemporary art at White Cube Gallery, Bermondsey.
69. See a Rosetti at the Guildhall.
70. Notice how The Laughing Cavalier's eyes appear to follow you around the room in the famous Frans Hals painting at the Wallace Collection.
71. Get an eyeful of kings and queens, musicians and film stars at the National Portrait Gallery.
72. Discover art by Botticelli, Leonardo da Vinci, Rembrandt, Gainsborough, Turner, Renoir and Van Gogh at the National Gallery.
73. Admire masterpieces by Cézanne, Bonnard, Matisse, Picasso, Rothko, Dalí, Pollock, Warhol and Bourgeois at Tate Modern.
74. See modern art at Chelsea's palatial Saatchi Gallery.
Laughter Costs Nothing
75. Enjoy a giggle at Angel Comedy Club, which offers free comedy every night of the week.
76. Get over Hump day at Launch Pad, The Miller's free weekly comedy night on Wednesdays.
For Music Fans
77. Hear musicians studying at the Royal College of Music performing free lunchtime and rush-hour concerts across London.
78. Dance along to ska, roots, reggae and folk rhythms at Hootananny Brixton, which offers loads of free gigs.
79. Enjoy regular free church music from the choir at St. James's Piccadilly.
80. Open mic fans can experience free music every Sunday at the Hope and Anchor pub open mic sessions.
81. The Southbank Centre holds regular free musical performances in the Royal Festival Hall and Queen Elizabeth Hall.
82. Enjoy free entry to blues bar Ain't Nothing But... from Sunday to Thursday nights.
83. Discover free lunchtime concerts at St Martin-in-the-Fields church.
84. Camden's The Forge holds free jazz concerts every Monday night.
85. Hear London's most vocal orators share their opinions with the world at Speaker's Corner in Hyde Park.
See London's Riches For Free
86. Admire luxury yachts in St Katharine Docks.
87. Look up at the architecture in Regent Street.
88. Marvel at everything from silver armchairs to champagne swizzle sticks at London Silver Vaults.
89. Check out the mysterious London Stone at 111 Cannon Street. Legend says the stone was part of an altar in a temple built by Brutus of Troy.
90. See the remains of London's Roman amphitheatre in the basement of the Guildhall Art Gallery.
91. Visit Southwark Cathedral, the oldest cathedral church building in London.
92. Marvel at how living rooms in England have changed since 1600 at the Geffrye Museum.
93. View the London Wall, the remnant of the Roman wall which was built in AD 200 and once formed part of the eastern defences of Roman Londinium.
94. See what London's streets looked like in days gone by with Museum of London's app Streetmuseum.
95. Celebrate Chinese New Year in London's Chinatown, the biggest celebrations outside Asia.
96. Join revellers at London's biggest street party, the Notting Hill Carnival.
97. Cheer on the rowers taking part in the Oxford and Cambridge Boat Race as it passes along the River Thames between Mortlake and Putney.
98. Expect events galore at the month-long Totally Thames Festival in September.
99. Glide around London on rollerskates on a two-hour tour with London Skate.
100. Cool off under the fountains by The Scoop.
101. Bring a picnic to feast on in Somerset House's gorgeous 18th-century courtyard.