Barbican Conservatory

An enormous, 135-metre-high observation wheel with 32 exterior glass-walled capsules. It offers incomparable views over central London and up to 40 km (25 mi) away on a good day. Tickets are sold for specific times, so if visitors wish to go on the London Eye at a specific time, they are strongly advised to book in advance, particularly in the summer. On a busy day, you can easily spend 1-3 hr queuing just to buy a ticket. However, you can also purchase tickets in advance online. Then you can collect your tickets at the London Eye in a separate queue, which takes a few minutes or less.

A Victorian school, now a university with a mission to advance knowledge of the fine arts. Exhibitions are common. Times and admission charges vary but can often be free, although visitors may need to book tickets to certain events.

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.

Remains of the wall that surrounded the City of London for almost two thousand years. The parts around the Barbican are mostly Tudor due to maintenance (Roman remains can be seen in and around the Tower of London). Other local remains are the 51.5169-0.095833 Noble St wall fragment and the 51.5177-0.092234 St Alphage Gdns wall fragment.

The remains of the once-magnificent palace, home to English kings since Edward I, adjoin Richmond Green, a pleasant open green space and historic cricket ground. Only the Gate House and Wardrobe, now converted into flats, remain.

A branch of the Imperial War Museum, the Cabinet War Rooms preserves the underground corridors and rooms from which Churchill and the cabinet directed the war against Hitler and the Nazis, maintained almost exactly as they were left in 1945. In 1984, IWM opened the rooms to the public for the first time. In 2005, the attached Churchill Museum was opened as the world's first permanent museum dedicated to the life and wartime achievements of Sir Winston Churchill. Audio guides are included in your admission. No cloakroom, no rucksacks, no suitcases. Café is open daily from 10am to 5pm. Hot food is served until 3pm.

Magnificent 19th-century bridge, decorated with high towers and featuring a drawbridge. The bridge opens several times each day to permit ships to pass through – timings are dependent on demand, and are not regularly scheduled. When Tower Bridge was built, the area to the west of it was a bustling port – necessitating a bridge that could permit tall boats to pass. Now the South Bank area sits to its west, and the regenerated Butler's Wharf area of shops and riverside restaurants lie to its east. You can get the lift to the top level of the bridge and admire the view. Glass floors provide an interesting perspective for the brave. The museum highlights the bridge's history and engineering, and there are photographic exhibitions along the walkways between the towers.

The main, central square of London, Trafalgar Square is associated with celebration and demonstration - it is the site of London's lacklustre New Year celebrations, and in 2003 was the site of the triumphant homecoming of the British Rugby team from the World Cup, and a centre for demonstration against Britain's involvement in the Iraq War. The square has been associated with the many hundreds of pigeons that used to be found here, but in 2003 a bylaw was passed to make it illegal to feed them. Nelson's Column, surrounded by the four bronze lions can be found here, on the south side of the square. The north-west plinth in the square was intended to hold an equestrian statue of William IV, but remained bare since 1841 due to insufficient funds. Since 1999, it has been used to display controversial contemporary sculpture. Houses the British national collection of western European art dating from the 13th to 19th centuries. A truly awe-inspiring collection, notable works include Hans Holbein's The Ambassadors, Van Gogh's Sunflowers and Constable's The Haywain. The vast majority of art is free of charge to visit. Temporary exhibitions are generally fairly costly, but invariably well researched and presented. The audioguides are very comprehensive, have comments on most of the paintings in the museum, and are free though this fact is not advertised. A donation is suggested. In addition to courses, workshops, lectures and other events, the National Gallery has free talks and tours every day. The National Portrait Gallery is just around the corner from the National Gallery and is an entertaining way to learn about British history since the Tudors. Visitors walk around the gallery chronologically, viewing portraits of notable figures from British history - from Henry VII, painted by Hans Holbein, to Blur, painted by Julian Opie. The High Commission of Canada immediately opposite to Trafalgar Square maintains a regular art exhibition featuring Canadian artists.

This steel pedestrian bridge connecting Bankside with the City of London has all the lovely views of the Thames that you'd expect, but most of those who cross Millennium Bridge never notice its most distinctive feature. The bridge is dotted with hundreds of tiny paintings, so small that you'll probably miss them under your feet if you're not looking for them.

Founded by veteran designer Zandra Rhodes.

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 oldest church in the City, founded by Saxon abbots in 675 AD.

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.

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.