Once the "Eighth Wonder of the World," this iron railroad bridge was decimated by a tornado.

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

This monument marks the beginning journey of a wounded soldier's leg that ended up almost two states away.

Home of the only civilian casualty at the Battle of Gettysburg.

Giant acorn-shaped 19th century gazebo from which suburban Washingtonians gazed upon the original "silver" spring.

This 1836 church, constructed by formerly enslaved people, honors a leader in Afrocentric music.

This seemingly cursed monument is dedicated to one of Canada's great war heroes.

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

This shrine dedicated to the Virgin Mary is also a tribute from a mother to her fallen son.

An abandoned relic of the city's failed experiment with below ground transit.

A historic house in St. Louis was plagued by a series of suicides committed by family members involved in a successful brewery.

This urban drawbridge gained eternal pop culture fame when the Blues Brothers jumped it while it was raised.

A display of magnificent stained glass windows is the first exhibit of its kind.

Four glass boxes hover over 1,000 feet in the air to give visitors an unparalleled view of Chicago.

A Norwegian-born sculptor created these soaring guardian angels at the entrance to Hoover Dam.

A bronze plaque at an intersection in Hoboken marks the place where the game of baseball first took shape.

The world-record holder for the longest bridge stretching continuously over water.

The state's oldest continuously operating museum houses more than 5,000 Civil War artifacts.

This symbolic piece of New Orleans architecture is also home to a few ghastly stories.

A giant time capsule not scheduled to be cored until 2040.

The birthplace of American international flight service has been turned into a celebrity's microbrewery.

This general store is more than a century old and home to various oddities and antiques.

The beloved, war-tested mascot of a Union regiment graces their battlefield monument.

The last remnants of Fort Pitt also hold the distinction of being the oldest structure west of the Allegheny Mountains.