Quite simply the largest tree in the world (by volume).

The largest hot spring in the United States is, as the name suggests, a stunning show of natural color.

Aqueducts have dramatically changed this old lake, now home to tufa towers and its very own species of tiny brine shrimp.

A beautiful geyser under environmental threat.

The deepest lake in the United States, and once the site of epic destruction that lives on in legends.

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

A roaring, awe-inspiring double cascade of icy water flows through woodland Oregon like something out of a Tolkien novel.

Dramatic river bend surrounds a natural red-rocked pedestal.

On the Oregon coast there is a natural hole that seems to be draining the sea.

Montreal's colorful subway station shows its support of the local LGBT+ community.

A contemporary fresco movement illustrates the region's rich history.

This natural wonder is disappearing at an alarming rate.

A grand Gothic Revival basilica with stained glass depictions of Montreal's religious history has only one soul resting in its crypt.

Fossils, railroads, and waterfalls!

This scenic Maryland park was the site of one of the worst prison camps of the Civil War.

The twin towers in this Chicago fountain use 50 foot tall video screens to spit on people.

Washington's iconic carousel has a nice piece of Civil Rights history.

A little marble compass above George Washington's (empty) tomb in the Capitol marks where D.C.'s four quadrants intersect.

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

This imposing Masonic temple a mile from the White House was the first public library in Washington, D.C.

Fittingly, America's museum of architecture is itself a magnificently designed old building.

An allegorical sculpture in Maryland wears the artist’s politics on its trunk.

The tallest The Church of Jesus Christ of Latter-day Saints temple in the world soars above the Beltway.

Built by the patriotic residents of Boonsboro in a single day.