This sixth-century synagogue was first reconstructed digitally, then in real life.

This French Canadian classic is a specialty of the oldest continually used church in Minneapolis.

Eight "Guardians of Health" protect this art deco water tower from pollutants and bacteria.

A well-preserved network of cavernous tunnels have spent silent centuries removing Toronto's waste.

One of Canada's most incredible rare book collections holds hundreds of thousands of gorgeous tomes that the general public can touch.

A botanically themed auditorium blooms within the world’s last operating double-decker theater.

The ruined remains of an early hydroelectric dam.

You don't have to visit the deep blue sea to see these majestic creatures swimming wild and free.

The world's largest and most outstanding marl lake regularly changes color.

One extremely determined man's homemade universe.

Legend says Dungeons and Dragons players can get their dice blessed at the creator of the game's memorial.

According to the legend, this strikingly beautiful hill has miraculous healing powers.

Home to the world's largest refracting telescope and the birthplace of modern astrophysics.

Every winter, the wind carves blocks of frozen water into beautiful abstract shapes inside this unusually curved tunnel.

Literally a million fascinating cartographic artifacts are held in this sprawling university collection.

A lovely hidden waterfall right off the highway is well worth a stop.

The oldest certified bowling alley in the United States is in the basement of this century-old bar.

A unique botanical garden housed in three giant geodesic domes.

Eternal resting place of the grave robber and murderer who served as inspiration for many of cinema’s famous madmen.

A remote hill on a stretch of country road where the laws of physics are defied... or so it seems.

The arboretum whose marshy soil sucked up the dreams of housing developers.

Vikings and Evangelicals have both had a hand in this replica medieval church.

This pebble beach is so beautiful that taking its rocks is against the law.

Robots, lasers, and whoopee cushions, oh my!