National Gallery

The largest square in London. It was established in 1806 by the 5th Duke of Bedford and his statue can still be seen in the square. There is also a café.

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.

The great domed cathedral of St Paul's, designed by Sir Christopher Wren to replace the Gothic medieval cathedral destroyed in 1666 in the Great Fire of London, was built between 1675–1710. Of the most famous London sights, St Paul's is the one most conveniently located for the Barbican. It's a significant building in British history, having been the site of the funerals of several British military leaders (Nelson, Wellington, Churchill), and significantly held peace services marking the end of the two world wars. The cathedral is also famous for its Whispering Wall, as well as its stunning view over the city. The crypt is also open to the public, holding the tombs of Nelson, Wellington and Christopher Wren. It is possible to sidestep the admission charge by entering for one of the midday services, even if you don't take part, or for the daily choral evensong in the late afternoon. However, you'd still need a ticket to get to the top. Photography is not allowed.

Garden founded by apothecaries in the 17th century to the medicinal properties of plants. It was only opened to the public in the 1980s, when it became a charity. The heat-sink caused by its thick walls, combined with the general waste heat of London itself, keeps the garden much warmer than it would otherwise be at this latitude. Due to this, the garden contains the world's most northerly example of a grapefruit outside of a greenhouse, and the largest fruiting olive tree in the country. The collection contains thousands of different plant species.

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.

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.

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.

Museum at the former home of Dickens exhibiting writings, paintings, furniture and other items relating to the writer.

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

Home to the baroque composer George Frideric Handel from 1723 until his death in 1759. Some of the greatest classical music ever composed was done so at this address. The museum charts Handel's life and works and offers recitals of music in the magnificent setting of the period rooms. By contrast, next door was home to Jimi Hendrix when he lived in London in 1969, and entry to this top-floor flat is included.

There are three notable outdoor bathing ponds on the heath. The Men's Pond and Women's Pond are both part of the line of small lakes on the eastern edge of the heath known as Highgate Ponds, and the Mixed Pond is part of Hampstead Ponds on the opposite side. Swimming hours are seasonal, complicated, age-dependent and change frequently, so it is worth checking before making a special trip.

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.

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.