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

Around 100,000 bodies are buried below the medieval headstones, many of which mark graves with multiple bodies stacked up to 12 deep.

The last moments of the ill-fated Pompeiians, frozen forever in plaster.

The world's most active stratovolcano is almost always erupting.

Two geological phenomena in one precarious locale: a towering stone window, and a deep blue void.

Stone Age solar temple is aligned with the sun on each equinox and solstice.

The highest point in the state of New Hampshire, and while unlikely "the worst weather in the world," it sure seems that way to hikers.

From failed port town to Civil War fort, the ruins of this former defense saw their finest day in the television age.

An enormous pink granite batholith, long attributed with spiritual powers by the Tonkawa Indians.

William Faulkner kept his beloved estate wild and untamed.

Joe Minter is only doing the work of God in his yard, he says.

An eerie and beautiful group of columns mark the site of a grand mansion lost to time and fire.

The second-largest ceremonial mound in the United States is an artificial hill that is loosely shaped like a pentagon.

A tribute to the twin ideals of religion and patriotism, built by a Catholic priest from rocks, glass, and innumerable found items.

When you visit his grave, be sure to rub the Great Emancipator's nose for good luck.

Home with Gothic windows featured in a famous painting.

A bizarre house filled with an astounding array of collections.

This striking art museum holds an amazing series of curiosity cabinets.

House built with over 60,000 glass bottles.

Former self-sufficient mental institution now a planned community.

A museum devoted to the victims and the survivors of the most catastrophic fire in American history.

This shifting North Carolina sand dune is an odd little desert surrounded by oceanic forest life.

Pennsylvania's highest point is spotted with boulders which were pushed to the surface by nothing but cold.

The last holdout of a pre-Civil War rebel who took the matter of slavery into his own hands.