Greenwich Peninsula Ecology Park is four acres of freshwater marsh, two lakes and a wildflower meadow, fifteen minutes' walk from North Greenwich station on reclaimed industrial land behind the O2. It is free, you do not need to book, and it is closed on Mondays and Tuesdays — which is the single fact most likely to waste your afternoon.
Open days are Wednesday, Thursday, Friday, Saturday and Sunday, 10am to 5pm. You get in through the Gatehouse, a wooden building standing directly on the Thames Path between the end of John Harrison Way and Greenwich Yacht Club, and a warden counts you in.
The site has been open to the public since 2002. It is owned by the Land Trust and managed on its behalf by The Conservation Volunteers, and the whole of it is created habitat: freshwater marsh built on reclaimed industrial ground. Our guide to Greenwich covers the town a mile and a half to the west; this is a different place entirely.
Greenwich Peninsula Ecology Park at a glance
- Entry
- Free. No booking needed
- Open
- Wednesday to Sunday, 10am to 5pm. Closed Monday and Tuesday
- Size
- Four acres: two lakes, marshland, alder woodland and a walk-in meadow
- Entrance
- The Gatehouse, on the Thames Path between the end of John Harrison Way and Greenwich Yacht Club
- Nearest station
- North Greenwich (Jubilee line), 10 to 15 minutes on foot
- Nearest bus stop
- Millennium Village Oval Square
- Hides
- Two, east and west, both with level access
- Dogs
- Not allowed in the inner park or on the outer boardwalk, except guide and assistance dogs
- Food
- No café. Picnicking is not permitted on site
The closed days, and how to avoid the wasted trip
Five days a week is generous for a site this small, but Monday and Tuesday are the days most visitors have free in London, and the gate is locked. There is no way round it: the Gatehouse is the only entrance, the site is fenced, and the boardwalks are not visible from the Thames Path.
Worse, the Conservation Volunteers' own frequently asked questions page for the park has not been updated since the pandemic. It still describes two three-hour sessions a day, a cap of eighteen visitors, NHS Test and Trace barcodes and one-way systems. The Visit page, which we read on 28 September 2026, gives the current position: Wednesday to Sunday, 10am to 5pm, no booking. Trust the Visit page and ignore the FAQ, or telephone before you travel.
Two of the park's own pages contradict each other. The Visit page gives Wednesday to Sunday, 10am to 5pm with no booking; the FAQ page still gives pandemic-era sessions and a Test and Trace requirement. We have used the Visit page throughout. If the two still disagree when you plan a visit, ring the wardens rather than guessing.
Walking there from North Greenwich, step by step
North Greenwich is 17 minutes from Bank on the Jubilee line via London Bridge, and costs £3.10 off-peak; our guide to the Jubilee line covers the rest of the route. Transport for London measures the walk from the station to the park at 15 minutes, and the park itself says 10 to 15.
The park's own directions are the ones to follow, because the peninsula is confusing and the O2 is a large object to get on the wrong side of. Head for the river, find the cable car terminal beside the water, then go under and past it, walking away from the O2. Stay on the Thames Path and keep going until the wooden entrance building appears on your right. That is it.
Coming by bus, get off at Millennium Village Oval Square, which is served by the 108, 129, 132, 161, 180, 335, 486 and the SL11 Superloop. From the stop, cross the village square with the shops in it towards John Harrison Way and turn right towards the river. Where the road dead-ends it meets the Thames Path; turn right onto the river path and the Gatehouse is ahead of you. The 422 stops on John Harrison Way itself and the 188 on Millennium Way, both a little further out.
On foot or by bike, the park sits on the Thames Path between the O2 and the Thames Barrier, and our guide to the Thames Path and London's walking routes has the longer route. There are bike racks outside the Gatehouse; bikes cannot come in.
What is inside four acres
More than the size suggests, because the habitats are packed tightly. There are two lakes with marshland around them, a small woodland at the edge dominated by alder — a tree that thrives with its roots in water — and, in the middle, a walk-in wildflower meadow.
The boardwalks are wide, wooden and mostly flat, with a couple of very minor slopes. A new bridge connecting the inner and outer boardwalks is now open, reached like everything else through the Gatehouse.
Two bird hides, east and west, give close views over the water, and both have level access. The bird year divides cleanly: snipe and water rail arrive for the winter, reed warblers and swifts for the summer. Between them, the mixture of habitats supports newts, frogs, stag beetles, butterflies, dragonflies and bats, and the meadow exists largely to feed the insects that feed everything else.
Twenty to forty minutes is enough to walk the whole thing. An hour is enough to sit in both hides and see something. If you are the sort of visitor who watches rather than walks, you could spend a morning here, and that is what the benches are for.
What is not here
This is a small nature reserve run by a conservation charity, not a visitor attraction, and the list of absences matters more than the list of features.
- No café. Bring food and drink with you. There is a small shop in Millennium Village Square, about five minutes away.
- No picnicking on site. The park asks you to eat elsewhere: the benches along the Thames Path, Southern Park behind the reserve, or Central Park off John Harrison Way.
- Almost no shelter. The Gatehouse is for access rather than sitting in. Bring an umbrella if rain is forecast; the park stays open in it.
- No scooters or skateboards beyond the Gatehouse, and no smoking anywhere on site. You can smoke by the river just off the Thames Path.
- No dogs in the inner park or along the outer boardwalk, apart from guide and assistance dogs, which are welcome throughout.
There are toilets, including an accessible toilet in the Gatehouse, and buggies can go on the boardwalks — though the park asks you to fold them and leave them at the centre if you can.
The only free thing on this side of the peninsula. Everything else around the O2 costs money: the arena, the climb over its roof, the cable car at £7 one way. A reserve with two hides and a meadow, open five days a week for nothing, is the outlier, and it is ten minutes from all of them.
Making a half-day of it around the O2
On its own the park is 40 minutes of your life. Combined with what is around it, it makes a good afternoon, and the geography helps: everything here is within a fifteen-minute walk of North Greenwich station.
| Nearby | Cost | Time needed |
|---|---|---|
| Ecology Park | Free | 40 minutes to an hour |
| Cable car to the Royal Docks | £7.00 one way, £13.50 return for an adult | 10 minutes each way |
| The O2 and its bars and cinema | Free to walk into | As long as you like |
| Thames Path east to the Thames Barrier | Free | About an hour on foot |
The cable car is the obvious pairing, since you walk past its terminal to reach the park; its hours are longer than the park's, and our page on the London Cable Car has the fares and the wind closures. Walking east instead brings you to the Thames Barrier in about an hour.
Getting to the peninsula in the first place is covered in our guide to how to get to The O2, and if you are staying out here, in staying near the O2 and Greenwich Peninsula. Food, which the park does not provide, is dealt with in where to eat near The O2 and in Greenwich.
Visiting with children
It works well for children who will look at things and badly for children who need to run. The boardwalks are narrow enough that a five-year-old cannot get far ahead, the water is on both sides, and the meadow is fenced to protect it.
What children get out of it is the pond life: frogs and newts in spring, dragonflies in high summer, and the hides, where being quiet is the whole game. Ask at the Gatehouse for a paper spotter sheet to take round. There is no playground and nothing to climb on, so pair it with something physical; our guide to London with a toddler covers the alternatives on the peninsula.
Buggies are fine on the boardwalks. Bring a picnic to eat afterwards in Southern Park rather than expecting to eat inside the reserve.
Is it worth the journey?
Yes, on one condition: only if you are already coming to this part of London, or if you are the kind of visitor who would cross a city for a water rail. It is free, it is well made, and the contrast between reed beds and the towers of Canary Wharf across the water is the best thing about it. Forty minutes here is time well spent.
It is not worth a dedicated trip from a hotel in Bloomsbury if you have three days in London. Four acres is four acres, and there is no café to make an afternoon of it. If a small urban reserve is what you want and you are staying centrally, Camley Street Natural Park behind King's Cross does the same thing at the same size with a café attached. For a full day of water and wildlife, the Lee Valley Regional Park is the scaled-up version.
Two things would change the verdict in its favour. If you are visiting the O2 anyway — a concert, the roof climb, the cinema — the park turns a single-purpose trip into a proper afternoon. And if you want something genuinely unusual on the same side of the river, Deptford Creek lets you walk in a river bed with a guide, twenty minutes west. Either way, a free reserve open five days a week belongs on our list of free things to do in London, and the grand alternative on the hill is Greenwich Park.
Frequently asked questions
When is Greenwich Peninsula Ecology Park open?
Wednesday, Thursday, Friday, Saturday and Sunday, 10am to 5pm. It is closed on Mondays and Tuesdays. Entry is free and no booking is required, and access is only through the Gatehouse on the Thames Path.
How do you get to the Ecology Park from North Greenwich station?
Walk to the river, find the cable car terminal, and pass under and beyond it going away from the O2. Follow the Thames Path until the wooden Gatehouse appears. Allow 10 to 15 minutes. By bus, get off at Millennium Village Oval Square and walk down John Harrison Way to the river path.
Is there a café or can I picnic there?
Neither. There is no café on site and picnicking inside the reserve is not permitted. Bring food and eat it on the benches along the Thames Path, in Southern Park behind the reserve, or in Central Park off John Harrison Way. A small shop is five minutes away in Millennium Village Square.
Is the park accessible for wheelchairs?
Largely yes. The boardwalks are wide and mostly flat with a couple of very minor slopes, both bird hides have level access, and there is an accessible toilet in the Gatehouse. The approach along the Thames Path from North Greenwich is level throughout.
Can I bring my dog?
No, except for guide dogs and assistance dogs, which are welcome in all parts of the park. Dogs are not allowed in the inner park or along the outer boardwalk because of the sensitivity of the habitat and the birds using it.
Sources
- The Conservation Volunteers - visiting Greenwich Peninsula Ecology Park: opening days and directions (checked September 2026)
- The Conservation Volunteers - about Greenwich Peninsula Ecology Park (checked September 2026)
- The Conservation Volunteers - Greenwich Peninsula Ecology Park frequently asked questions (facilities and access) (checked September 2026)
- Transport for London - London Cable Car opening hours (checked September 2026)
- Transport for London - Journey Planner, walking time from North Greenwich (checked September 2026)