This mountaintop lake bubbles and steams in a perpetual boil, thanks to its direct link to the Earth's interior.

A flower grows on this giant stone that is said be able to control minds.

At first glance, little checkered structures on the hillside look like they house the living, not the dead.

A city continually buried under the ash of a volcano that has been erupting for more than 15 years.

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

A hotly contested micro-nation off the coast of Montserrat.

Small church built in the 19th century for whites and slaves to worship together.

Commercial airplanes land mere feet over the heads of sunbathing beachgoers on this tiny island.

Site of a famous 19th-century transcendentalist utopian community, now abandoned.

This serene oasis in an affluent Los Angeles neighborhood holds some of Gandhi's ashes and got Elvis into Eastern Philosophy.