Few cities can stir the imagination like Cuba's capital, Havana, a city preserved by forts and citadels, a five-mile seawall, and an imposed embargo which held back the excesses of the 20th century for over 50 years.
Alongside additional barriers, like grassy dikes and concrete seawalls, these fortifications made up the bulk of the Delta Works project, which was primarily focused on holding back ocean storms.
We're traveling to Sydney, Australia, where one organization called Living Seawalls is changing the way we think about building infrastructure in the ocean.
Andreas said it took time for his predictions to be taken seriously by Indonesian government officials. He is pleased the large sea wall is being planned.
But the government of Prime Minister Sheikh Hasina says it has spent $112 million on improvements that include seawalls, hospital, schools and mosques.