Machine Gun Corps Memorial

Designed by one of Britain's leading architects, Sir Norman Foster, this curved glass skyscraper was the 2004 recipient of the Stirling Architectural Prize for Best Building. It was built on the site of the Baltic Exchange building, destroyed in 1992 by an IRA bomb which killed three. On the Bury Street side of the Gherkin by some black stone benches is the Tomb of the Unknown Girl for a teenaged Londoner who died 1,600 years ago (see infobox above), marked with a marble laurel wreath and inscription. Searcy's Restaurant (from £50) at the top takes bookings up to five weeks in advance and you have to go through security before going up.

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.

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.

The main sights to see in London's Chinatown are the expressions of Chinese culture and Eastern ambience in Chinatown, and for a good Chinese meal. There are few souvenir shops for tourists and no museums or temples. The three ornamental Chinese arches are worth a look. Chinatown does incorporate some entertaining combinations of British and Chinese culture, such as the phone booths with pagoda-style sloping roofs.

The main headquarters of the Worshipful Company of Fishmongers and a Grade II* listed building.

The oldest of the Royal Parks of London.

London's main zoo is in the northern reaches of Regent's Park. Takes a very conservation-driven approach these days and always has great exhibits aimed at children. Opened in 1828 for scientific study, then to the public in 1847.

Old train station with an enormous office and shopping complex in glass and pale stone. A lavish hotel is also on the site. The name comes from the Queen Eleanor (13th century) gothic pillar outside the station, which is actually a Victorian-era replica. Charing Cross Road was once famous for its vintage book shops, but these have now largely disappeared due to high rents and online competition; however, the road is still home to one of London's largest bookshops, Foyle's.

Constructed 1672-9 to a design by Sir Christopher Wren and regarded as one of the finest Wren churches. The 63 feet (19 m) high dome is based on Wren's original design for St Paul's Cathedral. The circular altar is by the British sculptor Henry Moore, and the kneelers are designed by Patrick Heron. Free lunchtime concerts at 1PM on Tuesdays (except August). Free Organ recitals at 12:30PM on Fridays. Occasional art exhibitions on Christian themes and other events.

The restoration of the nave was completed in September 2004, and this church is still a striking building designed by Sir Nicholas Hawksmoor with a particularly tall, pointed spire. Hawksmoor's design was significantly altered in the 19th century, and present continuing restoration is intended to restore it to Hawksmoor's original vision. Christ Church was built as part of the 50 Churches for London project.

The unusual "walkie scorchie" profile of this skyscraper by Rafael Vinoly has seen it grab the headlines, as did the "death rays" caused by the sun's heat reflecting off the building onto the street below when it was first completed; car tyres melted and burst, and at least one man fried an egg using only the heat from the walkie talkie. Visitors can access the sky garden to see a magnificent view over the City and beyond; it's the only place you can't see the tower from! Online booking to visit during the day is essential. Alternatively, you can eat at one of the restaurants in the evening.