Stay on the Ecuador farm that produces the world’s most expensive chocolate

A bar of To’ak chocolate sells for a tooth-splintering $345 – but a stay in a treehouse in the Ecuador rainforest where it originates costs just $15 a night

50 free things to do in London: part one – central

With certain London attractions charging over £100 for a family of four, a day out in the city can be depressingly expensive. But it needn’t be. Follow our guide to brilliant things to do for free, and have a top day out without spending a small fortune. Here is our first instalment of world-class museums, galleries and more

• Our complete London city guide