The highlights at Kew Gardens are the two greenhouses from the Victorian period, the Temperate House and the Palm House. Both are marvellous examples of glass and iron structures. The sheer size of the Temperate House is impressive and the diversity of plants is incredible. I liked best to climb the spiral stairs and to walk around the galleries (photo). I visited Kew Gardens together with a biologist, which was a double-edged experience. She knew almost all the plants and it was interesting to hear a lot of details about all these exotic species, their habitats and characteristics. On the other hand, it was often exhausting to go just a few steps forwards to the next plant. And now I have hundreds of photos of plants and details of plants on my computer, in addition to the many pictures of the buildings themselves, which I took.
Also worth visiting is the modern Princess of Wales Conservatory, which houses plants from ten different climatic zones. It was opened in the 1980s, and it is interesting to compare its modern architecture with the Victorian greenhouses. Not to be missed are the beautiful Waterlily House and the small Alpine House. And I was very impressed by the old giant trees that are everywhere throughout the park. There is also a Royal Palace, the Kew Palace, but we decided not to visit - plants were clearly the topic of the day. For the way back, we took a boat to Westminster. That was very relaxing and a wonderful end of an exhausting day trip.