Off a hiking trail in Rhode Island stands a picturesque memorial to a long-forgotten war.

It's said that this stone with its mysterious runic inscription is evidence of the Norse visiting Narragansett.

A public art jibe at one of the United States’ oldest and longest-serving senators.

This apartment building designed by a notable Washington D.C. architect housed the Qing Dynasty's Legation.

A hidden passageway now marks the site of an assassination attempt on Ronald Reagan that some say broke a 140-year-old curse.

A brass and marble scale model of the solar system embedded in the concrete.

This former New Jersey bus now exists as a public art exhibit.

An iconic 1960s theater with a Buckminster Fuller-style geodesic dome.

This 18-foot-tall steel lotus is a meditation on ecological crisis that originally appeared at Burning Man.

This mother-daughter run curiosities shop is a beautifully odd mix of taxidermy and exotic plants.

This beautiful building in the heart of Manhattan's Financial District was empty for decades.

A treasure trove of artifacts, books, and artwork from the "golden age" of exploration.

Free public park and gardens filled with peacocks and peahens.

An exquisite grouping of structures made from 10 tons of invasive saplings.

A view-altering observatory at the University of Texas.

The upstairs reading room is packed with millions of rare books, literary manuscripts, and historical treasures.

Home to the largest urban bat colony in North America, estimated at 1.5 million bats.

An architecturally unique lighthouse that had to be lifted up and moved to avoid falling in the sea.

A massive sustainable farm designed by the mastermind behind Central Park.

Cryptid lake monster honored with its own monument.

The oldest Italian café in Boston, this spot also serves as a veritable museum of vintage coffee ephemera.

A beautiful and abandoned New York subway station from 1904, complete with chandelier.