Free but precious: The five most beautiful gardens and greenhouses from Paris to Vienna. Succulent collection in Zurich has 4,400 different species from 79 different plant families.

Vienna Botanical Garden Vienna is open all year round except for Christmas. The Tuileries Gardens in Paris are extensive 17th-century gardens centrally located between the Seine and Place Vendôme. Ghent is one of the most beautiful European cities with its picturesque canals, alleys and cathedrals.