3 Best Sights in Westminster, London

Anyone with even a passing interest in art will want to put this near the top of their to-do list while visiting London, for it is truly one of the world's great art museums. More than 2,300 masterpieces are on show here, including works by Michelangelo, Leonardo, Turner, Monet, van Gogh, Picasso, and more. Enter through the grand portico overlooking the north side of Trafalgar Square to delve headlong into the highlights of the collection, although the Sainsbury Wing (the modern building immediately to the left), which focuses mainly on medieval art, is invariably less crowded.

You could easily spend all day discovering what The National Gallery has to offer, but among the best-known highlights are The Ambassadors by Hans Holbein (1497–1543), a portrait of two wealthy visitors from France, surrounded by objects laden with enough symbolism to fill a book—including, most beguilingly, a giant skull at the base, which only takes shape when viewed from an angle; The Arnolfini Portrait by Jan van Eyck (1390–1441), in which a solemn couple holds hands, the fish-eye mirror behind them mysteriously illuminating what can't be seen from the front view; The Virgin of the Rocks by Leonardo da Vinci (1452–1519), a magnificently sculpted altarpiece commissioned in 1480; and Rain, Steam, and Speed—The Great Western Railway by J. M. W. Turner (1775–1851), which seems, in its mad whirl of rain, steam, and mist, to embody the mystical dynamism of the steam age (spot the fleeing hare).

Special exhibitions, of which there are several every year, tend to be major events. Generally they're ticketed, so booking is advisable if it's a big name. The permanent collection, however, is always free. Guided tours of the collection and curator’s talks take place regularly, both in the gallery and online; check the website for details. Audio guides can be purchased (£5) to play on your own smartphone.

The National Portrait Gallery was founded in 1856 with a single aim: to gather together portraits of famous (and infamous) Britons throughout history. More than 150 years and 200,000 portraits later, it is an essential stop for all history and literature buffs, especially following a major renovation that has reconfigured the interior to allow for more light and modern gallery spaces, as well as an impressive public forecourt and cast bronze entrance gates by the artist Tracey Emin. If you visit with kids, swing by the new Learning Centre to take part in family activities. 

Galleries are arranged clearly and chronologically, from Tudor times to contemporary Britain—take the lift to the third floor and work your way down. Look out for treasures such as the enormous portrait of Elizabeth I—bejeweled and literally astride the world in a powerful display of imperial intent—plus portraits of Shakespeare and Sir Walter Raleigh. More of the photography collection is on display since the rehang, though expect these exhibits to change regularly. On the top floor, the Portrait Restaurant has one of the best views in London—a panoramic vista of Nelson's Column and the backdrop along Whitehall to the Houses of Parliament.

First opened in 1897, and funded by the sugar magnate Sir Henry Tate, this stately neoclassical institution may not be as ambitious as its Bankside sibling, Tate Modern, but its bright galleries lure only a fraction of the Modern's overwhelming crowds and are a great place to explore British art from 1500 to the present. The museum includes a couple of galleries staging temporary exhibitions, and a permanent collection on the upper floors. And what a collection it is—with classic works by John Constable, Thomas Gainsborough, Francis Bacon, and an outstanding display from J. M. W. Turner in the Clore Gallery. Sumptuous Pre-Raphaelite pieces are a major draw, while more recent art historical periods are represented with works by artists such as Rachel Whiteread, L. S. Lowry, Vanessa Bell, Duncan Grant, Barbara Hepworth, and David Hockney. Tate Britain also sometimes hosts the Turner Prize exhibition, with its accompanying furor over the state of contemporary art. When taking place in London, as opposed to other cities around the U.K., you'll find it here from about October to January.

The café is a good spot for a reviving cup of tea and a cake. Look out for semiregular Late at Tate Friday evening events, when the gallery is open late for talks or performances; check the website for details.

Craving more art? Head down the river on the Uber Boat by Thames Clippers ( £10.90 one-way) to Tate Modern; it runs between the two museums every 20–40 minutes during museum open hours.