In 2012 the presidents of Kenya, Ethiopia and South Sudan came together to launch the ambitious LAPSSET (Lamu Port--South Sudan--Ethiopia Transport Corridor) project.
The plans include an oil refinery, pipelines from South Sudan, transportation hubs for rail, road and air vehicles, plus a giant port for oil tankers. A number of tourist resort cities are also expected along the development's path.
Costs are set to come in at around $25 billion although concerns remain over the impact on the local environment. Lamu Port is listed as a UNESCO World Heritage site and the surrounding area is home to protected marine reserves and forests.
The Kenyan government has set aside $23 million for the Lamu section of the project while Reuters reported that a Chinese company had won the first tender to build three berths at the port in April this year.
What the Hyderabad Metro does 20 meters above ground, London's Crossrail project will seek to do beneath the British capital's bustling streets and out into its sprawling suburbs.
A $23 billion development, the 73-mile rail project will connect London from East to West, improving access to Heathrow Airport, central London as well as city's surrounding towns and suburbs.
Work began in 2009 and the first trains could be in operation as early as 2018. More than 8,000 people are involved in the project working across 40 separate construction sites.
Although not the most expensive infrastructure project in the pipeline, the $950 million New International Trade Crossing bridge -- which will connect Windsor, Ontario in Canada and Detroit, Michigan in the U.S. -- could well be one of the most impactful as far as international trade is concerned.
The NITC's stated aims are to increase commerce capacity, reduce traffic bottlenecks and improve opportunities for businesses in both countries by providing a state-of-the-art, publicly operated border crossing.
Roughly 25% of all merchandise trade between Canada and the United States -- one of the world's largest bi-lateral trade partnerships -- currently cross over the Detroit River via the nearby (privately run) Ambassador Bridge, according to the bridge operator's website.
Barack Obama ordered a presidential decree to construct the NITC in March this year, however the owners of the Ambassador Bridge have logged legal challenges against the project.
They have also announced plans to expand the existing capacity of their own facility which originally opened in 1929.
What exciting projects did we miss on our list? Let us know in the comments section below.