Knebworth House, Gardens and Park reopens for the 2026 season

If you fancy a proper spring day out just over the border from Northamptonshire, Knebworth House in Hertfordshire is reopening for the 2026 season on Saturday 21 March. Think historic house vibes, beautiful gardens, a huge park, an adventure playground, and a brilliant Dinosaur Trail that usually goes down a storm with kids.

They’re open on selected dates from March to September, and you can save money by pre booking online before you go.

What’s included with a Gardens and Park ticket

A standard Gardens and Park ticket includes:

• Knebworth Gardens
• Knebworth Park
• Adventure Playground and Fort Knebworth
• Dinosaur Trail

Knebworth 2026 opening dates at a glance

Knebworth is open for public day visits on selected dates from March to September 2026, including:

• 21 and 22 March. Open weekends
• 28 March to 12 April. Open daily
• 18 April to 17 May. Open weekends and bank holidays
• 23 to 31 May. Open daily
• 6 June to 5 July. Open weekends
• 16 July to 6 September. Open daily
• 12 to 27 September. Open weekends

Also check out: Things To Do In Northamptonshire For Families

Ticket prices

Here are the key online prices (you’ll pay a little more on the gate):

• Single Gardens and Park ticket (age 3+). £15.50 online, £16.50 on the gate
• Family Gardens and Park ticket (4 people). £58 online, £62 on the gate
• Adult House, Gardens and Park (age 17 to 64). £22.50 online, £23.50 on the gate
• Family House, Gardens and Park (4 people). £86 online, £90 on the gate

Top things to do at Knebworth House in 2026

Visit in the Easter holidays

Knebworth House, Gardens, Park, the Adventure Playground and the Dinosaur Trail are open daily for the school Easter holidays from Saturday 28 March to Sunday 12 April.

This is such a good time to go because everything is springy and colourful. Do the Dinosaur Trail first while energy is high, then finish at the adventure playground to really let them burn it off.

Easter ‘Signs of Spring’ Trail

Over the Easter bank holiday weekend, Friday 3 April to Monday 6 April, there’s an Easter ‘Signs of Spring’ Trail where children can become nature detectives and spot signs of spring around the gardens.

The trail sheet is aimed at children aged 3 to 8, and costs £2 per child (general admission is separate).

Autism friendly early openings

Hertfordshire Garden Show

If you’ve got older kids who can tolerate a bit of browsing, or you just want a lovely day out for you, the Hertfordshire Garden Show runs from Saturday 2 May to Monday 4 May at Knebworth.

Tickets include access to Knebworth Gardens and Park, so you can easily mix it with the playground and Dinosaur Trail.

Father’s Day Medieval Jousting

On Father’s Day, Sunday 21 June, you can watch Medieval Jousting displays at 12pm and 2.30pm.

Tickets include access to the Gardens, Park, Adventure Playground and Dinosaur Trail, and you can also buy tickets that include the house.

Classic Motor Show

Knebworth hosts a Classic Motor Show over the August bank holiday weekend, with a big mix of vehicles plus family entertainment, food and shopping stalls.

All About Dogs Show

Dog lovers, this one’s for you. The All About Dogs Show is coming to Knebworth Park on Saturday 12 and Sunday 13 September 2026.

Expect arena displays, show classes, breed meet ups, expert advice, shopping and lots of have a go activities.

Is a season ticket worth it?

If you think you’ll go more than once, a season ticket can work out really well. A 2026 season ticket costs £55 per person (under 3s go free) and includes:

• Entry to the Park, Gardens, Adventure Playground and Dinosaur Trail on all open days (March to September 2026)
• Free entry to selected events including the Easter Trail, Hertfordshire Garden Show, Medieval Jousting, Classic Motor Show and All About Dogs Show
• 10% off refreshments in the Garden Terrace Tea Room
• 10% off selected Gift Shop purchases

A few practical tips for a smoother day

• Pre book online for the cheaper price.
• Plan on layers. The park can feel chilly even on sunny days.
• Do Dinosaur Trail plus playground. That combo tends to be the big win for kids.
• If you’re taking a dog, note that dogs are allowed in Knebworth Park only, not in the house, gardens, Dinosaur Trail, or Fort Knebworth.

The events listed in this guide are run by third-party organisers, and all details were correct at the time of publication, based on information from their official websites. However, changes or cancellations can happen at short notice. To avoid any disappointment, we recommend double-checking the event information on the official websites before making plans.