How did Santiago Calatrava's World Trade Center Transportation Hub come to be? This intriguing new series explores the inspirations behind the world's architectural marvels.

A look at London's mammoth Battersea Power Station, brought back to life after 30 years of dereliction with designs from architect Jim Eyre.

An in-depth look at Japanese architect Kengo Kuma's first UK project, the magnificent V&A Dundee, including the huge challenges behind its construction.

A look at how Thomas Heatherwick's unusual and stunning design of many staircases became a mind-blowing tourist attraction in Manhattan, known as the Vessel.

A look at Ptolemy Dean's Weston Tower, which lies within Westminster Abbey. Exploring what went into designing the most significant addition to the historic site of Westminster Abbey in 240 years.

Explore the inspiration behind architect Graham Stirk's stunning Macallan Distillery in Scotland.

A look into the stunning Smithsonian National Museum of African American History - designed by British architect David Adjaye, and inspired by the art and history of Africa.

An inside look at the architecture behind London's new Design Museum in Kensington, a result of minimalist John Pawson's exquisite vision.

With his work loved by the Prince of Wales, John Simpson is the modern architect who creates breathtaking classical buildings - including his own Hampshire house.

The final episode explores the theatre at London's Alexandra Palace. Restored by Matt Somerville, he infused it with modern touches, while keeping its rich history alive.