Twickenham Stadium

The main residence of His Majesty King Charles III, Her Royal Highness Queen Camilla, and latterly of HM Queen Elizabeth II. In the summer, 19 State Rooms are open to the public. Places are strictly limited, and it might not be possible to just turn up and get a ticket for a specific entry time, visitors should book in advance to ensure admission.

The Serpentine is a long, thin artificial lake within Hyde Park which contains a range of waterfowl and fish. It was first made by damming the River Westbourne but it is now fed by three boreholes. The western end of the lake is actually in Kensington Gardens, in which it is called The Long Water. Swimming and boating are popular activities on the Serpentine; see 'Do' section.

A treasure trove of antique toys exhibited in a warren of 6 rooms above the toy shop of the same name. A very charming place indeed, though the doll rooms are a bit gruesome.

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.

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

All non-classified government documents can be read and photographed here, with a (free) reader's card having been obtained. There is also a small museum, which does not require the card to access.

Includes a small but beautiful quad and an interesting Neo-Classical facade. The core buildings of UCL were built after the university's foundation in 1826.

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

Created by Tonkin Zulaikha Greer and Janet Laurence to remember the Australians who died in both world wars. Made from Australian granite.

This garden square was established by Lord Southampton in 1665 and is the oldest square in London. It was opened to the public in the 1950s. The square is surrounded by a number of beautiful 18th- and 19th-century buildings and terraces.

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.

Former offices of the Greater London Authority. A radically-designed glass fronted and rounded building, previously headquarters for London's Mayor and Assembly. City Hall has now be relocated to The Crystal, a building in Greenwich, near to the cable car. The old building is disused and not open to the public, but can be viewed from the outside.