On the way back to San Francisco from India earlier this year, I had an 8-hour layover in London. Thanks to the convenience of baggage storage in Heathrow Terminal 3 and the Heathrow Express, I was able to get into Paddington Station in the city center within 50 minutes of landing.
I spent the day at the Design Museum. I primarily came to see the Ferrari: Under the Skin exhibition and the permanent collection. Surprisingly, I also spent a significant amount of time enjoying the architecture of the building itself and the Beazley Designs of the Year 2018 exhibition.