An information centre, bigger cafe, an ice cream parlour and a new shop are all being built at the National Trust’s Birling Gap.
Visitors to the Seven Sisters viewpoint will find much more on offer when they go later in the year and next year.
In the meantime they will be able to watch as the refurbishment takes place.
Work started last week and continues through the spring and summer.
The National Trust said Birling Gap welcomes more than 350,000 visitors every year and has outgrown the existing facilities.
The changes will ensure this beautiful site is an even better destination for a fun day out.
The works will include expanding the café to include an improved seating area, servery and a new ice cream parlour serving delicious Sussex ice cream, sundaes and treats.
There will also be a new shop offering souvenirs and gifts, and an information centre where visitors can discover the wildlife, people and natural processes that have shaped the local landscape.
The ice cream parlour will open in April 2013 and the improvements will continue throughout the year culminating in the new information centre opening in March 2014.
Zara Luxford, Operations Manager for Birling Gap, said: “It is really exciting to see the building works get underway with the promise of great new facilities later in the year.
“These works will give Birling Gap the facilities visitors have been asking for and we hope will bring a new lease of life to the site.”
Disruption will be kept to a minimum but as part of the works the café will not be serving hot food from March 11 to 15, although hot drinks, cakes and sandwiches will still be available.
The café will unfortunately be closed on March 12.
For further information about the improvement works and general details about the site visit www.nationaltrust.org.uk/birling-gap-and-the-seven-sisters
Birling Gap gives spectacular unspoilt views of the sea and the world famous Seven Sisters chalk cliffs, one of the longest stretches of undeveloped coastline on the south coast.
The gap is a point of entry for walkers.
The beach below is ideal for seaside picnics with its rock pools and areas of pebbles and sand.
It is a great example of a marine nature reserve.
The wild forces of the sea create unusual chalk platforms and huge heaps of gleaming white chalk as the cliffs erode at up to one metre a year.