Natural Wonders

The picturesque birthplace of Icelandic democracy is drenched in the blood of its brutal past.

If you can look past the nearby sewer pipes, this urban sinkhole grotto is a mini-paradise.

This tiered waterfall is so pretty it may cause visitors to cry tears of their own.

This secret Australian garden was built on love after a man planted a random bulb he found in the ocean.

This Sumatran root bridge took almost 30 years to knit itself together.

This huge pile of volcanic boulders hides a stunning network of secret grottoes.

This electric green sulphur lake in New Zealand looks like a cartoonish radioactive dump site.

This trio of Dominican cave lakes comprise a colorful biosphere of natural life.

A part of the world's largest marsh seems to be growing bright red Martian grass.

A beautiful stretch of Bangladeshi river known for its high quality sand is possibly more remarkable for its color changing water.

Mother Nature outdoes herself with this stunningly beautiful set of caves carved into marble.

Local legend says that whoever burns down this 2,000-year-old tree will only have seven days to live.

This giant boulder is pinched over a 1000-meter abyss by two mountains.

This small group of sand dunes manages to pack in a strange rainbow of colors.

One of the largest caverns in the world has a maw large enough to stack cathedrals in.

Seemingly grown on some other world, these New Mexico rock formations look like a disused science fiction set.

This angular Dwarven tunnel cuts through a mountainside in Glacier National Park.