At the end of 2014, Time ran an article detailing out the world’s 10 most expensive houses. Here they are, here’s what they’re about and here’s who owns them:

7 Upper Phillimore Gardens

Location: London

Value: 128 million dollars

Owner: Olena Pinchuk

Pinchuk is the daughter of Leonid Kuchma, Ukraine’s second president. She’s also known for being the founder of the ANTIADS Foundation and for being a friend of Elton John.

This mansion, formerly a 10-bedroom prep school, features an underground swimming pool, sauna, gym, theatre and panic room.

Kensington Palace Gardens

Location: London

Value: 140 million dollars

Owner: Roman Abramovich

Abramovich is a Russian billionaire and the owner of a private investment firm, Millhouse LLC. He also owns the English Premier League’s Chelsea Football Club.

This palace is located on London’s “Billionares Row,” and features an underground extension with a tennis court, health center and auto museum.

Seven The Pinnacle

Location: Big Sky, Montana

Value: 155 million dollars

Owner: Edra and Tim Blixseth

Tim Blixseth is a real estate developer timber baron. He also cofounded the private ski and golf community for the super-rich, the Yellowstone Club, of which this property is the largest.

His place includes heated floors, multiple pools, a gym, wine cellar and a private ski lift.

Hearst Castle

Location: San Simeon, California

Value: 191 million dollars

Owner: William Randolph Hearst’s trustees

The Hearst Castle is now a heritage and tourist site, and the Castle is part of the California Park System.

This 27-bedroom caste has been used in the movie The Godfatherand has hosted famous figures, including John and Jackie Kennedy, Winston Churchill and others.

Ellison Estate

Location: Woodside, California

Value: 200 million dollars

Owner: Larry Ellison

Ellison cofounded Oracle and Forbes’s third-richest man in the world in 2013.

The place features 23 acres that hold 10 buildings, a lake, koi pond, tea house and bath house.

18-19 Kensington Palace Gardens

Location: London

Value: 222 million dollars

Owner: Lakshmi Mittal

Mittal is one of Forbes’s 100 richest men in India, and he’s the head of the world’s largest steel manufacturer, Arcelor Mittal.

The property is also on “Billionares Row,” and it sits along the home of Prince William and Kate. It has 12 bedrooms, Turkish baths, an indoor pools and parking available for 20 cars.

Four Fairfield Pond

Location: Sagaponack, New York

Value: 248.5 million dollars

Owner: Ira Rennert

Rennert is the owner of Renco Group, a holding group.

The property sits on 63 acres, features a 29-bedroom home and has its own power plant. Inside the home, there are 39 bathrooms, a basketball court, bowling alley, squash courts, tennis courts, three swimming pools and a 91-foot-long dining room.

Villa Leopolda

Location: Cote D’Azure, France

Value: 750 million dollars

Owner: Lily Safra

Safra is the widow of Lebanese banker William Safra and is herself a Brazilian philanthropist. Allegedly her deceased husband perished in a house fire, possibly by arson.

This estate encompasses 50 acres, featuring an outdoor kitchen, helipad, large green house, swimming pool and pool house.

Antilia

Location: Mumbai, India

Value: one billion dollars

Owner: Mukesh Ambani

Ambani is India’s richest man, toting a net worth of 23.6 billion dollars. He made his fortune running an energy and materials company, Reliance Industries.

The property is basically a 27-story apartment building, featuring 400,000 square feat of building space. There are six underground parking floors, three helicopter pads and requires a staff of 600 people to maintain it.

Buckingham Palace

Location: London

Value: 1.55 billion dollars

Owner: The British Sovereign, currently Queen Elizabeth II

The property is technically a house, and it holds 775 rooms, which include 19 state rooms, 52 bedrooms, 188 staff rooms, 92 offices and 78 bathrooms.

Source: http://time.com/money/3585583/worlds-most-expensive-houses/