Free Tours by Foot offer name-your-own-price London walking tours.  They provide a platform for professional, freelance tour guides to lead walking as well as food and bike tours at no upfront cost, so that you may enjoy a quality sightseeing experience no matter what your budget. 

Experts consider Kew’s Palm House to be the most important surviving Victorian iron and glass structure in the world. It was designed by Decimus Burton and engineered by Richard Turner to accommodate the exotic palms being collected and introduced to Europe in early Victorian times.