Leadenhall Building

As with any Merlin attraction, it is arguably overpriced for what it is. Brings to life the gorier elements of London's past both real life and fictional. Including the execution of Charles I after the English Civil War, the bubonic plague, Jack the Ripper, Mrs. Lovett's pie shop and Sweeney Todd's barber shop with faithful recreations of disaster, disease, and torture using live actors. Younger children may be scared.

This enormous arch was built in front of Buckingham Palace. In 1851 the expansion of the palace meant the arch could no longer remain where it was, so it was moved to this point on Hyde Park. It now stands rather sadly on a large traffic island, but the subway beneath the roads means you can stop off at the Marble Arch on your way from Oxford St to Hyde Park.

One of the most expensive residential streets on the planet! Most of the buildings here are embassies or ambassadorial residences but the rest of the mansions belong to some of the richest people in the country (or elsewhere). For added historical value, during World War II, the current Norwegian embassy was where King Haakon VII led the Norwegian government-in-exile (commemorated by a blue plaque) and MI19's "London Cage" prisoner-of-war facility was located here. There is no public right of way but the Crown Estate allow pedestrians and cyclists to use the street; photography is not permitted.

The London residence of the Dukes of Wellington, which now acts as a museum for the inaugural and most famous holder of the title. It boasts an impressive collection of paintings, sculptures, medals and swords. Perhaps the most bizarre item in Wellington's collection is a nude statue of Napoleon Bonaparte, commissioned by the emperor himself and bought by the British government following his defeat at the Battle of Waterloo as a gift for the duke.

Madame Tussauds is a world-famous waxwork museum, best known for its Grand Hall, with a collection of international royalty, statesmen and world leaders. Visitors generally report that the entrance fee does not warrant the selection of waxworks on show, which rarely resemble celebrities. Also, there is usually a long queue stretching down the road.

191-m (627-ft) skyscraper can be seen from far away and is the sixth highest building in UK.

Formerly the teaching collection of Sir Flinders Petrie, one of Britain's greatest archaeologists, now preserved by University College London. Exhibits include beaded dresses, sculpture and wall reliefs, items of everyday use, papyri, cartonnage and pottery. Fascinating!

Prestigious contemporary art gallery worth a visit.

A historic boat, part of the Imperial War Museum.

Founded by veteran designer Zandra Rhodes.

Islamic Cultural Centre and the main mosque in London. Visitors are welcome but must be suitably attired. The Mosque runs classes, prayers, talks and events.

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.

London Stone is a historic landmark housed in a public display case at 111 Cannon Street in the City of London. It is an irregular block of oolitic limestone measuring 53 × 43 × 30 cm (21″ × 17″ × 12″), the remnant of a once much larger object that had stood for many centuries on the south side of the street.

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.

A neoclassical church that stands opposite the National Gallery. Since World War I, the homeless have sought shelter at this church, a tradition that continues to this day.