If you’re looking to diversify your property portfolio, then there are some unique opportunities available at the moment.

From theme parks to castles and lighthouses, vendors across the globe are offering properties that are likely to be once in a lifetime opportunities.

For any big cartoon fans out there a 12-hectare Flinstones themed amusement park in Arizona is currently for sale in Arizona.

Built in 1972, Bedrock City operated for 40 years and features a gift shop, theme park, restaurant, RV park and campground and convenience store.

There is also a 350 square metre residential housing facility onsite that offers two separate living areas, two kitchens, four bedrooms complete with vanity sinks, and two and a half baths.

Bedrock City is being offered by private sale for US$2 million for the property, with the current owner describing it as a “unique opportunity” that could be redeveloped as a casino, resort, housing estate or shopping centre.

Unfortunately the sale of Bedrock City, located 48 kilometres from the Grand Canyon, does not convey the Hanna Barbera licence to allow the property to keep operating as is.

For those who have a more medieval dream property in mind, then Italy’s attempts to ease its debt levels might have more interest.

The European nation is opening up a huge portfolio of historical buildings in an attempt to raise more than $2.9 billion.

Private investors will be allowed to enter into 50-year leases for more than 600 castles, monasteries and palaces and lighthouses, with it hoped they will be restored and used as boutique or up-market accommodation.

Italy’s Agency of State Property is expecting keen interest in the 10 light houses on offer, due to their coastal locations offering “charming views, silence, relaxation, solitude and uncontaminated nature."