Dedicated to "the father of U.S. life insurance."

Mrs. Mallard and her brood are a beloved fixture in Boston Public Garden.

A dedication plaque on this Boston tunnel is a microcosm of a massive, controversy-laden construction project.

This giant Boston statue of Mary is standing on a globe to show her power over the universe.

A memorial dedicated to victims of the Irish Potato Famine who perished while quarantined on this island.

The site of the tragic isolation of Nipmuc Native Americans left to perish in King Philip's War.

Second largest wastewater treatment plant in the country.

At the largest railway museum in the United States, you can see everything from an early steam engine to a functioning Thomas the Tank Engine.

Palatial mansion estate used in films including "Flowers in the Attic" and "The Witches of Eastwick."

Speak to a companion on the other side of the room loud and clear through this architectural anomaly.

The world's largest collection of the world's largest objects is in one small Illinois town.

The inspiration for H.P. Lovecraft's horror stories and Batman's Arkham Asylum is now a condominium complex.

A quiet memorial marks the spot where the victims of the Salem Witch Trials were executed.

A museum dedicated exclusively to the lore and history of ouija boards.

This titanic oil company sign is a reminder of the Americana boom of the 1970s and also its commoditization.

A commemoration of over 150 of St. Louis's favorite sons and daughters.

A late sculptor's last project was to turn this abandoned cement factory into a castle-themed amusement park.

Man-made geyser that rises to the exact height of the Gateway Arch.

Once one of the world's great cities, Cahokia was a place of religious worship, trade and mass human sacrifice before being mysteriously abandoned.

Fresh wooden posts have been added to ancient holes to recreate a primitive henge clock.

Quirky water tower advertises the long-gone Brooks Tomato Products Co.

Less a museum than a bizarre fantasy world created by artists and engineers.

In Edwin Hubble's hometown, a scale model of the groundbreaking telescope that was named in his honor.

World's largest magnetic research facility.