Plans are continuing for a "bespoke, world-class" hotel at the National Arboretum, taking particular advantage of the visitors attending functions and weddings on the site.
There are also plans being laid for a permanent stage to be built for the amphitheatre, to help lock in major events and performing artists.
A further 12 kilometres of biking and walking tracks are now under construction, adding to the existing six kilometres of trails, opening up more access to the forests.
The recent ACT budget also allocated $2.5 million to seal the overflow car park at the arboretum, adding another 685 car spaces.
Arboretum director Scott Saddler was excited by the growing infrastructure but adamant the trees would always be the drawcard.
"The 44,000 trees are our major asset," he said.
Mr Saddler said a $90,000 feasibility study into a proposed hotel would be conducted first, scoping out the likely scale and potential design of any structure.
Any development would have to meet a high standard and be approved by the National Capital Authority.
"We're looking for a bespoke, six-, seven-star hotel," he said.
"It's the best site, as far as I'm concerned, in Australia. So we want something that is going to fit in that world-class model."
Three tenders had been received for the hotel feasibility study.
"We're currently in negotiations with the preferred tenderer and we expect a contract to be signed within the next fortnight," Mr Saddler said.
The hope was for expressions of interest for the hotel design and construction to go out in April or May, in consultation with the NCA.
"We'll be working with the NCA. We've met with them. Everything is progressing," he said.
Mr Saddler said the arboretum had attracted 3.7 million visitors and hosted more than 500 functions, 145 weddings and 80 funerals.
People attending those events would be attracted to a hotel on site, he said.
"I'm sure if you were having your wedding here or your function here, you'd rather not be travelling all over Canberra looking for accommodation," he said.
Similarly, a contract was close to being signed for a $120,000 feasibility study into infrastructure for the amphitheatre.
"That is more about bringing major functions to the arboretum," he said. "If we had a Johnny Farnham or any major artist worldwide, we've got to set up the stage, that takes three or four days, and another three or four days to take it down.
"If we've got a facility there that has dressing rooms, storage, a whole range of things, we can then put things on straight away. The artist turns up, the opera turns up and away we go.
"It's only about the stage, it's not about seating or the grassed area. It's more about having the stage."
Mr Saddler said 313 car parks were already sealed in the top section. The new work would see the five levels of the overflow car park sealed, adding another 685 car parks.
"That's future-proofing the National Arboretum," he said. "It's so popular, we need to include that quickly into our ongoing asset."