6 billion-dollar projects that will transform London by 2025

The renovation of the Battersea Power Station — the iconic building featured on the cover of Pink Floyd's 1977 album "Animals" — is at the center of a larger mega-development in London's Nine Elms neighborhood.

The estimated $17.6 billion, 8 million-square-foot project will include apartments, hotels, and offices. Construction is slated to proceed in seven phases — the first began in 2014 and the last is expected to finish in 2025.

Apple, the complex's anchor tenant, will move its London headquarters to the former power station in 2021.

In 2012, the city of London approved the developer Ballymore Group's plan to build a 15-acre development, which will include 130,000 square feet of restaurant and retail space, nearly 2,000 new housing units, an office building, a 100-bed hotel, a health center, and children's playgrounds.

The three-phase project, which is expected to be complete by 2019, is estimated to cost $2.9 billion.

In 2014, construction began on Royal Wharf, a new neighborhood planned for an area near London's airport along the Thames River.

The 40-acre development will include restaurants, bars, several schools, and 4,000 apartment units. Royal Wharf, which is expected to cost $4.1 billion, will be complete by 2019.

Wembley Park will be a large-scale housing development that surrounds the Wembley sports stadium, located 12 miles northeast of downtown London. The plan calls for 5,000 residential units for rental and purchase, as well as a 7-acre public park, a plaza, an elementary school, a hospital, shops, restaurants, and office space.

Set to open by 2024, the project has garnered $1.1 billion in funding so far.

The subway station near the London Bridge has been undergoing massive renovations since the early 2010s. When the work is complete in 2018, the station will have new tracks, shops, and a vast open floor plan.

The project, which is expected to cost $1.17 billion, is also spurring plans for housing developments in the surrounding area, including the redevelopment of Landmark Court with 80 new homes and the redevelopment of south and west Devon with new residential and student housing.