It’s the 150th birthday anniversary of American architect Frank Lloyd Wright and some of his architectural pieces of history are up for sale. We get to do a virtual open house and peak inside four Frank Lloyd Wright homes for sale.

All of Wright’s homes were designed using his theory of “organic architecture.” He wanted his homes to strike the harmonious balance between architecture and nature. The best example of his work is Fallingwater, built in 1935.

Fallingwater, Wright’s most famous architectural masterpiece. Image: Fallingwater

You can pick up one of his properties if you’ve got at least $1 million to spare. Here are four Frank Lloyd Wright homes for sale right now:

1. Stuart Richardson Residence | New Jersey

The home is designed to be hexagonal both inside and out. Image: The Robin Seidon Team

The living room is framed by 15 glass doors. Image: The Robin Seidon Team

This is the most affordable of the bunch. The 1,800 square foot, 3-bedroom, 2-bath home is listed at $995,000. It’s one of just a few of his hexagonal homes. Built in 1951, all the walls inside are angled at 60 and 120 degrees.

2. Sherman Booth House | Illinois

Three stories tall with a rooftop deck. Image: Chicago Business

Lots of glass and windows to enjoy the beautiful garden views. Image: Chicago Business

This one’s located in East Glencoe, Illinois, a suburb of Chicago. Built in 1916 for Wright’s attorney, it’s Prairie School in design and three stories high with a rooftop deck. This 5-bedroom, 4-bathroom home is listed for $1.9 million. The gardens are beautifully landscaped.

3. Paul and Helen Olfelt Residence | Minnesota

The home’s striking exterior. Image: Coldwell Banker

All the furniture is original and designed by Wright. Image: Coldwell Banker

Located in Saint Louis Park and listed at $1.295 million, this one is a gem. It’s the first time it’s been listed since it was built in 1958 and comes with all original fixtures and furniture designed by Frank Lloyd Wright. It’s a 3-bedroom, 2-bath, 2,647 square feet home set on nearly 4 private acres that feel like you’re in the countryside. But you’re minutes from downtown Minneapolis.

4. Tirranna | Connecticut

Beautiful property in New Canaan, CT. Image: Houlihan Lawrence

The expansive living room space. Image: Houlihan Lawrence

This is the priciest of the Frank Lloyd Wright homes for sale, but it sits above a waterfall! “Tirranna” is the Aboriginal word for “running waters.” The home is set in 15 acres of New Canaan woodland. It features seven bedrooms and eight bathrooms, and is listed for $7.2 million. The U-shaped design with glass walls showcasees the stunning gardens, all created by Frank Okamura, landscape architect for the Brooklyn Botanic Garden.