What defines a megaproject? And why do they so often go over both budget and schedule?

Denmark has earned a reputation for successfully completing large-scale construction projects – whether they are bridges, tunnels, land reclamation or offshore wind farms. The latest Danish megaproject is the Fehmarnbelt Fixed Link, a record-breaking 18-kilometer tunnel currently being placed on the seabed from the island of Lolland to Northern Germany.

In this episode, Michael Booth joins Professor Christian Langhoff Thuesen of Denmark's Technical University on a visit to the construction site of the Fehmarnbelt Fixed Link. Together they explore the impressive scale of the project and discuss the future of megaprojects in light of growing sustainability demands.

Let's Talk Architecture is a podcast by Danish Architecture Center. Sound edits by Munck Studios.