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

Though its celestial ceiling is impressive, the true star is the vast collection of French books.

Elevated freight railway turned wildly successful urban park.

The poems Nathaniel Hawthorne and his wife Sophia etched into its windows are still visible today.

Louisa May Alcott based “Little Women” on her experiences growing up in this house with her sisters.

"the sweltering inhabitants of Charleston and New Orleans, of Madras and Bombay and Calcutta, drink at my well . . . The pure Walden water is mingled with the sacred water of the Ganges."

A rare 16-bedroom Qing Dynasty house re-erected on the campus of the Peabody Essex Museum. 

The place where Samuel "Slater the Traitor" brought the Industrial Revolution to America.

The gorgeous library at Trinity College is home to remarkable treasures of Irish identity.

The picturesque birthplace of Icelandic democracy is drenched in the blood of its brutal past.

Before it was buried by volcanic ash, this fast-food restaurant fed the hungry hordes of ancient Rome.

If a glacial river suddenly diving into a sheer chasm via a dramatic, multi-stage waterfall isn't peak Iceland, it's certainly close.

The library houses an incredible collection of some of the world's most impressive books and manuscripts.

Breathtaking and huge 430 year old maps of Italy.

Gods clash with machines in a power plant regenerated as a museum.

The only "Egyptian" pyramid in Europe and the legendary tomb of Remus.

Built for an exposition in 1915, these horticultural displays have stood the test of time.

The location where the American Revolution ended.

An organ located deep within a cave, whose "pipes" are the geological features of the cave itself.

At 207 feet, one of the world's longest continuous escalators.

This seemingly out-of-place gas station by the Watergate hotel was once described as the most expensive gas station in the world.

The little-known, 300-year history of the area includes former lives as a bustling tobacco port, parking lot, and industrial dump.

An echo chamber with a waterfall wrapped around its base at the Embassy of Canada in Washington, D.C.

Light bulbs, scrap wood, and tinfoil comprise this homemade throne of the gods.