This eye-popping Icelandic crater lake is surrounded by red volcanic rock.

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

This hobbit-y little hot spring may be the oldest spring used by humans in all of Iceland.

A trio of hidden hot tubs takes advantage of Iceland's natural geothermal vents.

Rising from the sea like a stone monster.

Iceland: home to volcanoes, waterfalls and, apparently, Santa?

This might just be the TARDIS of bookstores.

A colorful architectural gem in Seattle's uniquely modern Central Library.

A Bibliophile's Dream.

"Try not to knock anything over!"

This iconic Parisian bookstore doubles as the "Tumbleweed Hotel" for traveling writers.

A 35-foot-tall fork stuck in the ground outside an office building in Missouri.

The world's second-largest excavated hole.

This Oregon farm is dedicated to teaching people the professional art of tree climbing.

This small section of the Sleepy Hollow Cemetery is rotten with famous authors' graves.

The thousands of shades on display — some toxic, others impossibly rare — are a library of more than just color.

Berthed at the Charlestown Navy Yard in Boston, "Old Ironsides" is the oldest commissioned warship still afloat.

Ice cream stand, snack bar, and time capsule of milk conveyance.

This "life-size" depiction of Mickey Mouse as a half-lobster is both whimsical and a bit creepy, standing guard over the Boston waterfront.

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

The Boston square dedicated to the dark poet who was born nearby.

This Boston medical museum features the skull of the famous medical case of Phineas Gage.

An ancient capital city that dates back 3,000 years old and harbors many surprises.

This quiet area of Yunnan Province annually transforms into an unbelievable sea of yellow flowers.