London's largest UNESCO World Site, the Royal Botanic Gardens, Kew, is the largest conservation project of its kind in the world. Visit the Davies Alpine House and experience the high-altitude conditions that allow alpine plants to grow, take a trip to the desert to the jungle at Princess of Wales Conservatory, marvel at treacherous carnivorous plants and take in sweeping views of London from atop the Great Pagoda.

The whole of the Old Town in Dubrovnik is surrounded by the city walls which served as a defence against attack from the sea. The wall stretches nearly two kilometres and is as high as 25 metres in some places. A walk on the walls provides the ideal opportunity to enjoy the medieval and baroque splendours of the Old Town.

Home to many timeless works of art such as 'Girl with the Pearl Earring' and 'The Goldfinch', the Mauritshuis Museum showcases the Dutch Golden Age of painting in all its splendour. Amongst others featured in the museum are both Rembrandt and Vermeer, two of the most celebrated master painters of this momentous time in Dutch history. In their work, they are able to capture the essence of the Netherlands as a global powerhouse and one of the most prosperous nations in Europe throughout the seventeenth century. Be aware that some of the better-known paintings are occasionally sent around the world to be presented in other art exhibitions so it is advisable to check ahead of time to see if they are on display.