Herts Young Mariners Base is an outdoor activity centre next door to YHA London Lee Valley.
Whether you’re a seasoned adventurer or a complete beginner, HYMB has something for everyone.
They offer climbing, canoeing, kayaking, caving, archery, fencing, stand-up paddleboarding, sailing and birthday parties. Most activities require booking in advance. Visit Herts Young Mariners Base website for more information and booking.
Free parking on premises
WiFi
Restaurant
A hidden gem just waiting to be discovered! Great for sports, heritage sites, country parks, farms and nature reserves. The Lee Valley Park stretches 26 miles, right from the heart of East London and...
Sunday 27th September 2026 Distance: 6 miles (9.5km) Duration: 3 hours Led by: Andrew McCloy, YHA Skills and confidence A straightforward and easy walk around the peaceful waterways and tree-lined...
Saturday 26th September 2026 Distance: 3.8 miles (6.1 km) Duration: 3 hours (90+ minute walk with time at the hostel before and after exploring the mindfulness theme) Led by: Stuart McLeod, RUN-ZEN...
An epic exploration of the Lee Valley Country Park with peaceful waterways, grasslands, lakes, wetlands, wildlife and sculptures.
A great walk through Lee Valley Country Park with sculptures and birdlife to historic Waltham Abbey.
A lovely walk in the Lee Valley Country Park including waterways, wetlands, sculptures, waterfowl and wildlife.
Saturday 10th October 2026 Distance: 6 miles (9.5km) Duration: 4 hours Led by: Outdoor Adventure Girls Discovery and connection This sociable women-only walk combines nature and history as we explore...
Sunday 20th September 2026 Distance: 9.5 miles (15km) Duration: 5 hours Led by: Stag Walkers Discovery and connection Join us for a varied walk through the Lee Valley Country Park, Waltham Abbey and...
Lee Valley White Water Centre is the place to be for unforgettable experiences, family fun and an adrenaline rush. Easy accessible from London, there are plenty of activities on offer including white...
Hire your bike from Broxbourne and ride around the village or come back into the country park to explore the landscape and wildlife of the area. Alternatively, take the cycle route right down to the...
Escape it all at Go Ape's London locations with high-rise fun on high rope courses plus exceptional views of London. As well as Go Ape Alexandra Palace, you can choose from locations at Cockfosters...
Alcotraz Cell Block Two One Two promises to be one of the most unique cocktail bars in London. Once convicted, inmates are taken into an exciting world of mischief as they are instructed by a...
A floating bookshop on Regent’s Canal towpath. As well as keenly priced books they boast a wood-burning stove, friendly dog and occasional live jazz performances.
A pleasant, pretty inner-city community space that’s tucked away behind King’s Cross station. Locals gather here to socialise, exercise and get their hands dirty gardening.
London Zoo is home to 750 species of animals including lions and lizards, monkeys and meerkats, birds and butterflies.
On this two and a half hour walking tour, your local guide will take you further into East London to discover street art, anti-gentrification movements, Cockney culture and more! Away from the palaces...