These giant metal horses graze on a hilltop near the Montana highway.

The highest point in Montana is as rugged and singular as the state itself.

High in the Rockies the third largest statue in the U.S. opens her welcoming arms, and lights up the night sky.

A scenic ravine with an astounding collection of rock art created by the Indigenous people of the Great Plains.

An entire town preserved as a historic landmark.

This beautiful ancient site is dotted with perforated sandstone pillars considered sacred by some Native American groups.

The only road through the heart of Glacier National Park.

This futuristically sylvan church is a glass-enclosed marvel of modern architecture.

A tiny monument to the unsuccessful attempt by Thomas Jefferson to place the prime meridian in Washington.

For 60 years, the academy had no permanent location until members voted Washington D.C. as its forever home.

The only National Monument ever to go missing for nearly 50 years then resurface in a dump.

Art deco landmark on the outskirts of Washington, D.C.

The most accurate timepiece in the world.

The first purpose-built art gallery in the United States is once again open as a center of craft arts.

The Byzantine, pre-Columbian, and medieval art at this stately mansion are some of the most under-appreciated collections in D.C.

People escaping slavery may have hidden inside a corpse vault.

There's a 12-foot-tall replica of the Washington Monument hidden under a manhole nearby.

Enormous piles of historically significant stones, dumped by Congress in a forest, and abandoned for 60 years.

A historic neighborhood church is reborn as a psychedelic arts collective.

This grand gothic brewery has been pumping out suds for over a hundred years.

The site of the climactic scene from the classic horror film is now a historic landmark.

Philadelphia boasts one of the best — and most often overlooked — traditional Japanese gardens in North America.

An enormous, inside-out glass globe built in 1935.

America's post-nuclear-attack chambers of Congress.