Perth locals can become tourists in their own town this weekend as they get the opportunity to explore more than 90 destinations during the annual Open House event.

Now in its fifth year, Open House showcases some of the city's most iconic buildings and is a celebration of West Australian architecture and design.

Old and Rare Books will be just one of the buildings open — and boy, does it have many a tale to tell.

Once an old horse stable, the heritage-listed building has been lovingly renovated by owners Rob and Janet Muir.

This old horse stable is now a book shop. ( Supplied: Dion Robeson )

Exposed jarrah timber complements the book-laden shelves, creating a warm and welcoming atmosphere for bibliophile browsers.

It was a labour of love to restore the timber that had become warped after a mining company used the upstairs area to store mineral samples.

"It was quite a feat to stretch them back to being flat," Mr Muir said.

The Muirs said they were once again looking forward to opening their doors during the Open House event.

"We took part in Open House last year and had around 600 visitors.

"The response was very positive.

"The space here is inviting and exciting, there are all kinds of possibilities here and we've really claimed it as our own."

As part of the restoration, the Muirs made sure the building's equestrian heritage was noted.

A cast iron horse's head hangs pride of place.

"Friends of ours found that in an old collapsed stable," Mr Muir said.

"It used to hang outside an old butcher's shop to indicate that the butcher sold horse meat."

Exploring virtual architecture at Mimic. ( Supplied )

At the other end of the Open House spectrum is technology solutions provider Mimic Lab, where visitors can lose themselves in virtual and augmented reality scenarios with an architectural focus.

"We want our visitors to see how much control they can have over the architectural process, that they have choices," Peter Midgley of Mimic Lab said.

For a full list of destinations and viewing times, head to the Open House Perth website.