The Old Operating Theatre

Eccentric Gothic home of 18th-century poet and author, Horace Walpole, son of England's first prime minister.

Now preserved by the National Trust, this 18th-century house was the home of the historian Thomas Carlyle from 1834 and now houses a museum dedicated to his life and work.

Dedicated to scientific exhibitions and collections bar those related to the life sciences. A number of famous historical machines and inventions are housed here, from steam locomotives to the Apollo 10 command module. The space exhibits are especially popular. Exhibitions tend to concentrate on explaining scientific principles with working models and there is a strong emphasis on education and attracting children. The Science Museum opened a "Children's Gallery" in the 1930s and it continues to lead the way in this area; now, there are three separate galleries aimed at all ages of younger visitor, from 5 to 16. The museum also runs "Science Nights" whereby children spend an evening learning principles and participating in experiments before spending the night sleeping in the museum with the exhibits. Also houses a vast library of scientific and medical books and journals.

This small tower across the road from the Houses of Parliament is the only part of the original Palace of Westminster still standing. While it is overshadowed in splendour by the surrounding buildings, it's well worth a visit, and has good displays about the early history of Westminster.

Probably the most popular of all the museums here and a must see for many visitors to London. Home to at least 70 million specimens from across all the life sciences. It's difficult to say what the most popular exhibit here is; the blue whale which towers over the entrance hall, the (now slightly tacky-looking) animatronic Tyrannosaurus rex in the dinosaur gallery, or the life-size model blue whale in the mammals gallery. Also well worth a check are the Darwin Centre (book on a free tour to see some of the most interesting, and sometimes gruesome, specimens not on public display); and the studio dedicated to BBC wildlife personality extraordinaire, David Attenborough. The NHM's "Earth Galleries" were once the adjacent Geological Museum, an independent institution until the 1980s, and still located in a separate building with a separate entrance.

The London Mithraeum is a 3rd century Roman mithraeum that was discovered in Walbrook during construction work in 1954. The entire site was relocated several times before being returned to its original site as part of the new Bloomberg building. This temple of the mystery god Mithras became perhaps the most famous 20th-century Roman discovery in London. In addition to the temple structure, there is a display of Roman artefacts found on the site and a contemporary art exhibit responding to the site. Visitor numbers are limited and timed slots are often fully booked up several weeks into the future so plan well ahead.

Named in honour of Queen Victoria and her consort Prince Albert, this museum has existed for over 150 years. It contains a huge collection of decorative arts from all over the world and far back in time. Trying to see everything in one day would be exhausting, so use the excellent maps the V&A provides to plan where you want to go. There are regular exhibitions concentrating on a particular theme from Chinese art to fashion designers. Frequently they put on children's activities and late DJ nights.

An intersection of seven streets in the northern part of the Covent Garden district. Lots of mid-range designer clothing and shoe stores

A retirement home for soldiers created by King Charles II. Tours around the listed building and grounds are regular and include the museum (which can be visited separately) whose exhibits contain military memorabilia donated by Chelsea Pensioners over the years.

This church on the bank of the Thames was built in 1157. It is the only church in London with chained books. A statue of Thomas More sits in front of the church.

The complex incorporates the Old Broad House built in 1930s. The façades of which feature the famous sculpture of Prospero and Ariel and the Ariel friezes by Eric Gill and Gilbert Bayes. BBC's The One Show is transmitted from the studio at the ground floor every weeknight starting from 7PM. The studio is quite visible from the plaza outside and some parts of the show are performed from outside of the studio – in the plaza.

Worth a quick visit if you are passing. The brick and stone neo-Byzantine Catholic Cathedral (not to be confused with the much more famous Westminster Abbey) is near Victoria Station, just off Victoria Street. Construction started in 1895, and some of the interior is still unfinished. The Treasures of Westminster Cathedral exhibition is inexpensive and worthwhile for learning the history of the cathedral, there are interesting exhibits including a 1:28 wooden scale model uses by the architects. Has a café and gift shop.

Probably the most colourful event in the UK's legislative calendar, this takes place in May or June every year, or after a general election, when the King travels to the Houses of Parliament to open the new parliamentary session. During this event, the Lords, Speaker of the House of Commons, and other office holders can be seen dressed in their ceremonial robes, and there is always an elaborate procession when the King makes his way to the Houses of Parliament from Buckingham Palace. This is one of the few occasions where all branches of the British government are gathered in the same place. Many traditions of the State Opening can trace their origins to a more turbulent past, when the relationship between the monarch and Parliament was sometimes antagonistic. In particular, since the English Civil War, the monarch has been banned from entering the House of Commons chamber, and instead must send a representative (the Black Rod) to summon the MPs to the Lords chamber, where he delivers his speech. Another notable tradition is the holding of a Hostage MP in Buckingham Palace, ostensibly to guarantee the safe return of the monarch, who is released once the King has returned to the palace safely after delivering his speech. While attendance at Parliament itself is limited to special guests that have been invited by the Prime Minister, it is broadcast live on the BBC, and you can also view the King's procession from Buckingham Palace to Parliament from the roadside for free.

This is probably the most famous criminal court in the world, and has been London's principal criminal court for centuries. It hears cases remitted to it from all over England and Wales as well as the Greater London area. The present building dates largely from 1907 (a new block was added from 1970 for more modern facilities) and stands on the site of the infamous medieval Newgate Gaol. The Central Criminal Court is of course best known today for its association with John Mortimer's Rumpole of the Bailey character, novels and television series. Daily case listings are available at The law pages. No bags, cameras, drinks, food or mobile phones—no facilities for safekeeping. Children under 14 are not admitted.

After leaving its brutalist skyscraper on Old Broad St, the London Stock Exchange now resides on Paternoster Sq. Dating back to 1698, it is one of the world's oldest and largest stock markets.