Take shelter from Hawai'i's tropical heat under the massive canopy of largest Banyan tree on the island.

The southernmost point in the United States is a beautiful place to look at but a deadly place to wade in.

A controversial memorial at the place where Captain Cook met his violent end.

This Hawaiian cattle ranch acts as a museum devoted to the island cowboys that predate the wild west.

Hide from the tourist hordes in these relatively unknown, and unguarded lava caves.

This black shoreline is made up of exploded lava particles.

These picturesque Hawaiian falls are home to a rare species of fish that uses a special sucker to climb up cliffs.

Earth's tallest volcano is sacred to Native Hawaiians, and home to a dozen world-class observatories.

This historic hotel invented the chocolate brownie.

A lush green oasis in the middle of Chicago.

This memorial plaque remembers a strangely shallow maritime disaster known as "Chicago's Titanic."

Built to house a chapter of the Knights Templar, this grandiose building is a relic of Freemasonry in Chicago a century ago.

Not to be confused with the iconic New York City skyscraper, this Chicago building is a vibrant hub for artists.

World's second largest particle accelerator, where nature reveals its secrets.

This elegant arc of a waterfall marks a religious turning point.

This stunning concert hall has become a symbol of Iceland's national recovery.

This beautiful, historic church looks like something out of a simpler past.

Twisted girders are all that remain of an Icelandic bridge that was wiped out by a combination of volcanic heat and glacial floods.

The unique waterfall in Iceland's south features a backdrop of geometric black lava columns.

One of the tallest buildings in Iceland, and perhaps, the most visually impressive.

Three columns of volcanic rock shoot out of the ocean.

A geological mystery on Camelback Mountain.

Sniff the Titan Arum's rotting flesh.

Tour the dark and beloved poet's former cobwebbed basement, which may have inspired "The Black Cat."