London

The best time to visit London is during the shoulder seasons, specifically April-May and September-October. The weather is generally pleasant, the crowds are smaller than in the peak summer months, and you can often find better deals on flights and accommodations.

London offers a wealth of attractions. Some of the must-sees include the Tower of London, Buckingham Palace, the British Museum, the Houses of Parliament and Big Ben, the London Eye, and the National Gallery. Consider also exploring iconic neighborhoods like Notting Hill and Shoreditch.

Londoners are generally polite. It's customary to say 'please' and 'thank you'. Public transport etiquette includes standing on the right on escalators to allow others to pass on the left. Tipping is not always expected, but it's common to tip 10-15% in restaurants if service is good.

London has an excellent public transportation system. The London Underground (the Tube) is the fastest way to get around. Buses are also plentiful and offer a scenic route. You can also use taxis (black cabs) or ride-sharing services. Consider purchasing an Oyster card or using contactless payment for easy travel.

London offers a diverse culinary scene. Don't miss trying traditional fish and chips, a full English breakfast, and afternoon tea. Explore the various food markets like Borough Market for diverse street food. Consider trying a pub lunch or dinner for a classic British experience.