Brighton's i360 is celebrating its first year of business today with half a million people visiting the attraction.
However, the visitor numbers fall short of the 700,000 originally predicted.
British Airways i360 says it's kept up with its loan repayments to the council and some of the profits will help restore Madeira Terraces on the seafront.
The company says it has created 150 jobs, given 39,000 free tickets to the city's children and held five weddings.
There will be a special flight later with guests on board being welcomed with drinks and cake.
Brighton's i360 has won an architectural award for its innovation and originality.
Presenting the South East Award, the Royal Institute for British Architects (RIBA) said there was "a sense of delight in the way the pod emerges from the bowels of the earth".
It's the latest award for the structure which was honoured with three South East RICS Awards - including 'Project of the Year' - earlier this month.
Strong winds have closed the i360. The moving observation tower - the tallest in the world - is on Brighton beach. Staff are closely monitoring the weather and say it is due to improve soon.
Only last month, the attraction broke down as part of "teething problems" leaving passengers stuck in the viewing pod. Specialist engineers were called in to work on it.
The i360 opened in August and is expected to welcome around 70,000 visitors a year who can enjoy panoramic views of the Sussex coastline and South Downs national park. The pod climbs to 450 feet (138 metres).
The British Airways i360 tower, beset with technical problems, is open today.
Hundreds of passengers were trapped for hours when it broke down on Thursday and twice on Sunday
"Shambolic" - the verdict of one customer caught up in the continuing problems on Brighton's i360 observation tower.
The attraction broke down twice yesterday, leaving passengers stuck in the viewing pod.
Today, some came back to try again, only to be told the i360 was closed while specialist engineers worked on it.
Malcolm Shaw has been following the latest developments.
The controversial British Airways i360 may have split opinion when it opened earlier this month, but people have been taking to the sky in their droves.
100,000 people have visited the attraction since it opened on the 4th August. Charlotte Wilkins reports.
The British Airways attraction opened thee weeks ago and welcomed its 100,000th visitor on the Bank Holiday Weekend.
It's the world's tallest moving observation tower at 162 metres. It cost £46 million and can carry up to 200 passengers.
The world’s first vertical cable car was designed by London Eye architects Marks Barfield Architects.
It's taken twelve years to plan, and two years to build.
And today was the day the public got their first chance to ride on the British Airways i360 in Brighton.
It's the world's tallest moving observation tower, and it cost 46 million pounds, so expectations were high.
But what did the first fee-paying passengers make of it?
We sent Malcolm Shaw to find out.
The British Airways i360 pod in Brighton has reached its maximum height for the first time.
Engineers are currently testing the attraction with the pod rising to 138m - making the landmark the tallest moving observation tower in the world.
It's due to open later in the summer.