Covering an area of some 40 acres, the Cambridge University Botanic Garden is a must-do for gardening enthusiasts. 

Established in 1831, the garden showcases an impressive collection of more than 8,000 species of plants from across the globe.

 Be sure to spend time wandering through the garden's many glasshouses and trails, something that can be done as part of a guided tour (free on Sundays). Afterwards, be sure to visit the Garden Café and Botanic Garden Shop.