From a modern mountain escape in Boulder, Colorado to a timeless brick estate in London, England, these are this month’s four featured notable properties for sale over $14 million.

Australia is famous for its wide-open spaces, its beaches, and its vibrant array of flora and fauna, among many other things. With highly-urbanized and cultural landmarks like Perth, Sydney, and Melbourne, it’s hard to argue that between the natural beauty – and the manmade variety – Australia remains high on the list of sought-after destinations.