VACATION AND TRAVEL
River Thames with the Shard on the left side
plan-ahead of time what they want to see and do, which may be outside the itinerary of a tour company. Also, there are many great accommodations there for all budgets, plus the food there is great according to reviews. There is enough there to keep you real busy, plus everyone speaks the English language, which makes for better communication.
Down below is a travel guide: https://www.visitlondon.com/things-to-do/sightseeing/london-attraction/top-ten-attractions
Currency converter: https://www.xe.com/currencyconverter/convert/?Amount=100&From=GBP&To=USD and a video.