The huge collection of paintings of the American West is one of Denver's best-kept secrets.

The stunning interior of this Gothic church is covered in ornate gold details.

The Netherlands is home to a bridge printed out of reinforced concrete.

A whimsical village of unique treehouses resides in a Washington forest.

At the United Kingdom's only residential library you can sleep among the books.

A little marble compass above George Washington's (empty) tomb in the Capitol marks where D.C.'s four quadrants intersect.

The small family-run business has kept alive the fading art of creating beautiful handmade book covers.

Take a monster truck tour around an ostrich farm in the middle of the desert.

A raised boardwalk winds through a thicket of stunted, century-old trees no more than nine feet tall.

The sounds of the world's largest fully functioning pipe organ dazzle shoppers at a Philadelphia Macy's.

Frank Lloyd Wright died a year before construction on his largest public project even began.

The cemetery houses the remains of Jun’ichirō Tanizaki, one of Japan's most famous novelists.

The abstract sandstone rock formations at this Algerian national park are rich with prehistoric art.

A common entry point to the Griffith Observatory trail holds its own wonders.

Every Friday, Sufi dervishes whirl around the tomb in a trance-like state as part of a sacred ritual called dhikr.

Malibu's first beach home features an astonishing trove of ceramic tiles.

A network of sandy streets lined with verdant fukugi trees weaves throughout this tiny seaside town.

This former charity hospital for elderly clergy houses some of Seville’s most treasured paintings.

The remains of a doomed Antarctic plane, buried beneath layers of ice and snow, await those willing to do a bit of digging.

During its heyday, the massive estate boasted its own railroad station and post office.

This quirky collection is an interactive exhibit crammed with creative contraptions and tinkered-with toys.

The inky volcanic sand leads to reefs teeming with aquatic life waiting to be discovered by snorkelers and divers.

The trailblazing Swedish businesswoman created a beloved minty candy called polkagris.

Crawl through the hole in the middle of this stone to break off a bad relationship or initiate a good one.