Does anyone have any extra spare change in their pocket? Michael Douglas and Catherine Zeta-Jones might be one of the richest couples in Hollywod, but even they are having a hard time unloading unwanted real-estate. The couple is struggling to sell their multi-million dollar Spanish estate, which is currently up for grabs at $54 million.

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According to Wales Online on Monday, the Hollywood stars can't find a buyer for their plush Spanish getaway on the island of Mallorca. The mansion has been sitting on the market now for about six months.

The site says that the mansion can easily fit 20 people in comfort as it consists of five apartments, two small houses, a loft, 10 bedrooms and 11 bathrooms. Douglas bought the estate in 1989 with his ex-wife Diandra Lucker. Even though the couple divorced back in 2000, they have continued to share the property, with Lucker living in it for six months out of the year while Douglas and Zeta-Jones had it for the other half.

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Meanwhile, according to the Business Standard last week, Douglas said that when it comes to the couple's marriage, their brief separation back in 2013 has only made them stronger.

He said, "We're closer than ever. I think that when both parties want to work something out, they can. It was mutual love that brought us back to each other -- we've been back together for two years and it's all worked out just fine. To sum up, no news is good news, and that's what we have."

The couple has been married since 2000 and will be celebrating their 15-year anniversary this summer.

Tags: Michael Douglas catherine zeta-jones