Megachurch turned Catholic church comprised of 10,000 glass panes.

A Swedenborgian glass church surrounded by redwoods sits perched atop a massive landslide area.

A Roman-style column in Oregon hides a spiral staircase inside.

This massive mall has hundreds of shops, an amusement park, and a history of deadly amusement attractions.

Two thousand artifacts from around the world collected by one woman who loved to travel.

This impressive Boston holy house is the American mecca for Christian scientists.

This upscale streetwear store is hidden behind a fake Snapple machine in the back of a deli.

The site of one of the strangest disasters in history—a wave of deadly molasses traveling at 35 mph.

A former waterfront market is now in the center of town due to some interesting Boston engineering.

This home is decked out like a psychedelic explosion of colors and bowling balls.

An octet of classic chrome trailers speared into the ground act as a tribute to the silver bullets of the open road.

A monument celebrating the idea of reaching inaccessible places.

The only swimming pool listed on the National Register of Historic Places is emptied and refilled each day with naturally filtered water.

105-foot wide giant metallic flower blooms anew every day in the heart of Buenos Aires.

Buenos Aires' city of the dead contains some very famous remains, including Eva Perón.

An Austrian house of bones filled with hundreds of intricately painted skulls.

The beautiful baroque library of the Hapsburg empire.

The resting place for anonymous victims of the Danube's dark waters.

This Slovak bridge is known both for its connection to a national uprising and its UFO-shaped eatery.

This Slovakian statue of an emerging sewer worker might just be a bronze peeping tom.

From Austrians to Nazis to Soviets, this historic Budapest fortress has a history as complex as the city itself.

This uber-quaint Polish village is known for its habit of painting elaborate floral motifs on just about everything.

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

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