8 Man-made Structures- Other to Explore in Hertfordshire

Cromer Windmill, restored in four stages between 1967 and 1998, is a Grade II* listed post mill at Cromer, Ardeley, Hertfordshire, England. It stands on an artificial mound just outside Cromer, near Ardeley, in which parish a windmill has stood for nearly 800 years. The mill is fully restored, including its machinery for grinding corn, but cannot actually grind. However, when the wind is right the sails will turn and the mill comes to life again.

The East Herts Miniature Railway is situated in the Van Hage Garden Centre, Great Amwell near Ware, Hertfordshire. This fantastic, 7¼" gauge railway completes two circuits of beautifully landscaped gardens and includes a trip over a pond and through a tunnel! Tickets for the railway cost just £1 per passenger. The railway opening times are from 11am-5pm on Saturdays and Bank Holidays . 10:30am-4.30 pm on Sundays. A special mid-week service operates during school holidays on Tuesdays and Thursday

Lee Valley White Water Centre is a white-water slalom centre, that was constructed to host the canoe slalom events of the London 2012 Olympic Games. It offers a range of white water activities including white water rafting on the London 2012 Olympic course, corporate days, hen and stag parties, children's parties, and much more.

A once immense mansion constructed in 1563-8 by the Lord Keeper of the Great Seal, Sir Nicholas Bacon. A prolific builder, Sir Nicholas spent many years expanding and adapting the residence - the showpiece of which was undoubtedly an elaborate and expensive porch adorning the entrance. The house was built partly from bricks taken from the old Abbey buildings at St Albans, then in process of demolition following the Benedictine priory's dissolution some 25 years earlier.

A large grotto, built by a Quaker poet in the 1760s and restored by the Ware society. It survives from an eighteenth-century rococo garden. It is a Grade I listed building and with six chambers the most extensive shell grotto in the United Kingdom. The grotto is set into the northeast face of a hill, and comprises an entrance hall and a series of six chambers extending over 65 feet into and 30 feet below the chalk hillside, together with air shafts, light wells, and connecting passages.

Approximately 7 miles long, the Nickey Line footpath and cycleway in Hertfordshire is a former railway line. The Nickey Line now forms a pleasant green corridor, a footpath and a cycleway, forming part of the National Cycle Network, providing attractive countryside and woodland walks, as well as a traffic-free route to school or work. The route is approximately seven miles long.

This new indoor recreational facility is in the heart of the local Bennetts End community in Hemel Hempstead and provides 10,500m² of floorspace made up of 7,400m² of indoor ski slopes, 2,300m² of amenity space and 800m² of retail space on a site of approximately 2.99ha. Hosting a range of skiing and snowboarding lessons for adults and children from 3 years old, lift passes, freestyle sessions and the ultimate sledging experience there is something for everyone to have a great day out!

Welwyn Roman Baths is a 3rd-century bath complex that formed part of the Dicket Mead Roman villa. The baths lie directly underneath the A1(M) motorway, protected by a steel vault. The baths were a small part of the Dicket Mead villa, which was originally built in the 3rd century AD.