Our travel adviser tackles your destination dilemmas, visa puzzles and itinerary ideas POP PAST THE QUEEN'S HOUSEMy mom and I arrive at Heathrow on July 30 at 7am. We will be meetingmy aunt and uncle who arrive at Gatwick at 1pm. They are renting a car and picking us up en route to Beacon Brecons National Park for a week long barge trip!Can you suggest an activity or place to visit for my mom and me for the morning, that we can easily reach with our luggage and that is easily reachable from the M4 for the pick up? - Abigail Ashingtonstory_article_left1With six hours between your landings, and the time it will take your uncle and aunt to get across London from Gatwick, you have plenty of time to so something worthwhile.My first suggestion would be to head to Windsor, where you can visit the castle and then have lunch.It is close enough (15km) to Heathrow for the Duke of Edinburgh to moan about the noise of planes over the castle.As you requested, Windsor is a short hop off the M4 - in fact you can see the castle on its hill from the motorway.The quickest and easiest way to get there would be by taxi from Heathrow, which will cost between R800 and R1,000 (£35-£45).You could also get there by public transport, which would take about an hour, but cost just over R100. Bus line 75 leaves Heathrow Central Bus Station every 30 minutes for Slough, from where you could take the train to Windsor and Eton.Your bags are the biggest problem due to security concerns, but you can store them in Windsor castle while you visit. They must be bags that can fit through airport-style security scanners, so use smaller suitcases.Windsor Castle is an official residence of Queen Elizabeth, where she spends most weekends. It is the oldest and largest inhabited castle in the world, and home to British monarchs for almost 1000 years.The state rooms are open to the public all year, bar a few days, and you can tour them, including the magnificent St George's Hall, which was rebuilt after being destroyed by fire in 1995. You can also visit St George's Chapel, a wonderful example of Gothic architecture. Every June, the Knights of the Garter gather here, where new knights take the oath.full_story_image_hleft1Among its many royal tombs, don't miss the memorial to Princess Charlotte of Wales, the only child of George, Prince of Wales (later George IV), who died aged 19 in 1817. Had she lived, she - and not Victoria - would have been queen of England and her memorial of marble, shrouded figures is one of the most beautiful anywhere.The castle is open daily from 9.30am to 5.30pm in summer. Entrance is £20 for adults, £18.20 if you are over 60.• Do you have a query for our travel expert? Send your question to travelmag@sundaytimes.co.za..