The Doctor Who Experience is to be officially handed the keys to its new exhibition space in Cardiff.
The attraction, which features sets, props and memorabilia from the BBC series, closed in London in February to make way for its move to Cardiff Bay.
The new 3,000 sq m building is at Porth Teigr, next door to the BBC's Roath Lock studios, where Doctor Who, Casualty and Pobol y Cwm are produced.
The exhibition is expected to attract up to 250,000 visitors a year.
The internal fitting of the building will take place over the coming weeks.
Paula Al-Lach, head of exhibitions and events at new tenants BBC Worldwide, said: "I'm thrilled to be formally accepting the keys to the building on Monday and can't wait to start moving in.
"We've worked hard to create an outstanding visitor attraction with the Doctor Who Experience.
"It's the first ever interactive Doctor Who exhibition and for our Cardiff opening we have some exciting new exhibits to be displayed in public for the very first time."
Ken Poole, Cardiff council's head of economic development, said: "Doctor Who is a global brand and is something that has really helped boost the profile of Cardiff internationally.
"This attraction will bring millions of pounds into the economy and the benefits to Cardiff will be immense in terms of tourism."