The Netherlands' Willem-Alexander and Maxima get on their bikes for castle tour

They aren't many countries in the world where the bicycle is a more popular way of getting around than The Netherlands.

Even the country's royal family seem to be big fans of the mode of transport.

Crown Prince Willem-Alexander and Princess Maxima both got on their bikes to cycle round Castle Duivenvoorde, situated near The Hague, on Wednesday.

The royal couple looked to be having a ball as they toured the grounds on a visit to celebrate its 50th anniversary as a museum.

The 38-year-old princess, who recently joined Spain's Queen Sofia for a humanitarian event in Kenya, chose a summery short-sleeved dress and grey cardigan for the occasion.

The castle building, which dates from 1631, underwent a major restoration in 1960 after its last owner entrusted it to the care of a foundation.

Since then it has been open to the public as a museum that aims to show the house as it was in 1717.

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