This quarter-mile tunnel under the Bluff in Pittsburgh bends at a 45-degree angle.

Meet your friends, marry your true love, or tell your enemies to kiss your butt under this historic Pittsburgh timepiece.

When oil was discovered just outside of Pittsburgh, the city became home to this regional stock market.

The entrance to this sinisterly named tunnel hides behind a Tim Hortons.

A miniature world of concrete and stone in Springfield, Ohio.

The charming collection celebrates a small Ohio village's Finnish roots.

The capital of the Cayman Islands is a center of offshore banking, but gets battered by blistering hurricanes.

This former factory has deep ties to rubber production in Akron.

Mausoleums, astronomy, and animatronic dinosaurs at this memorial to an assassinated American president.

Ohio's 19th-century communist micro-society.

Home to several unusual artifacts, including a huge painting of George Washington.

At the center of this cemetery stands a 2,000-year-old burial mound of the Adena culture.

This historic Ohio bridge is adorned with fanciful locks left behind by loving couples.

Visit a replica of the estate where Aaron Burr allegedly plotted a treasonous scheme against the United States.

A melancholy guardian doubles as a judicious godmother to this small town cemetery.

On the upper deck of this church-owned parking garage stand eight pillars topped with different Catholic saints.

An old church full of restored Catholic statues is a makeup artist's labor of love.

This impressive working clock made of 16,000 plants changes its flowers twice a year.

This staircase in a lush tropical grotto was built by enslaved laborers and renamed to honor Queen Victoria's role in ending slavery in the British Empire.

A unique set of caves that spits waves back out into the ocean.

Owned by no one but beloved by all, Brownie was a good dog.

The ruins of this antebellum sugar plantation are the end result of a Seminole attack during the Florida Wars of 1836.

A replica of one of the more than 15,000 civilian lookout towers that lined the U.S. coast during World War II.

What started as three small gnomes at the base of a tree has grown into a full-blown gnome home.