Mary G.
Yelp
The walk up to the castle is through a long tree-lined path with cute cows lazily grazing to your left and I could feel myself already falling in love.
We were staying out of town and made the trip by train to Utrecht and then by bus (though you can bike) to Haarzuilens just to explore for the day, and I'm glad we did.
The highlight of the castle is its grounds. For that reason I strongly recommend choosing a day with nice weather for your visit so that you're able to explore the gardens and bridges at their best. I especially loved how few tourists were walking around because it gave it a special, serene vibe. It somehow manages to feel un-touristy and totally relaxing.
To just enjoy the grounds is free of charge. To enter the Castle is 14€ per person and you must go on a guided tour in Dutch, though they have English audio available, but it is forbidden to take any photos within the castle. To enter the Chatelet, which is the actual living quarters of the family, is 7.50€ per person and you can walk around at your leisure. They have informative signs posted in Dutch and a little English packet available. We opted just to do the Chatelet. They didn't have an English map of the grounds available, but we made do.
Within the square with the welcoming center is a cafe with outdoor seating available. We weren't expecting much but our lunch was really quite good with a nice sandwich selection and my favorite bitterballen of our whole trip. You are also welcome to bring your own picnic.
I originally found out about Kasteel de Haar on pinterest through its popular photo of what's known on pinterest as "the bridge of romance." When we asked the staff they had never heard of it, lol, but we did find it right behind the chapel to the left and it was just as beautiful as it looks on pinterest.
The reason I'm not giving 5 stars is because the Chatelet was under renovation while we were there (April 2015) and touring the unfinished interior didn't feel worth the ticket price. I also don't like that photos aren't permitted inside the castle, and I like to be left to see places at my own pace, not on a mandatory group tour in a language I don't understand.
The lovely grounds, lovely lunch, and lovely staff made for a very lovely day.
Edited to add ticket prices.