London Squares are traditionally freely available open spaces for Londoners. They are open during the day and offer pleasant environments to rest, meet, walk and just enjoy the London weather. :-)
Trafalgar Square was built to commemorate the Battle of Trafalgar when the British defeated the French in the Napoleonic Wars.
Leicester Square is in the heart of London just to the north of Trafalgar Square and within easy walking distance of the former.
A cracking small square easily reached from the Tottenham Court Road end of Oxford Street. Soho Square has an intimate atmosphere and can be fun in the summer months when the Soho office workers invade the square at lunchtime and the early evening.
Golden Square is easily found situated just off Picadilly Circus at the bottom end of Regent Street - carnaby Street and Soho are nearby. Golden Square is a Central London great square just for sitting and relaxing during the day. There are plenty of benches and walls for sitting on, so no need to sit on wet grass - Golden Square is mostly paved in any case. Some stunning plants in full bloom are to be seen here in the summer season, when Golden Square is busy with tourists, locals and local office workers taking a well-earned break from their busy lives.