Iwan Baan / RIBA Comms The building was selected from hundreds of entries.
Coined "the modern day Machu Picchu," RIBA jurists called the building "an exceptional example of civil architecture - a building designed with people at its heart."
UTEC was designed by Irish architecture firm Grafton Architects in collaboration with local partners Shell Arquitectos.
Grafton beat off hundreds of entries then six finalists from around the world, including work from the late Dame Zaha Hadid.
The award's grand jury was chaired by the illustrious Lord Richard Rogers - the mastermind behind Lloyd's of London's famous "inside-out" building and Heathrow's Terminal 5.
Scroll down to see why the latest addition to the Peruvian skyline was named RIBA's best new building.