Derinkuyu is an ancient Turkish city that extends 250 feet underground and is large enough to house 20,000 people. Built as protection against invaders more than 2,100 years ago, the city had fresh water, stables, wineries and oil presses.
Coastal redwoods are a type of evergreen tree that can live to be more than 2,000 years old. They are the tallest trees on Earth, with some reaching more than 250 feet tall. Redwoods provide habitats for many forest creatures and pull more carbon out of the air than any other tree species. Where can you find these magnificent perennial plants?
Rivers in the Balkans are largely free-flowing, unlike other bodies of water on the continent. They are home to endemic species of fish, provide habitats for birds, and a playground for watersport daredevils.