A narrow fjord-like lake, the third-deepest in the United States, runs for over 50 miles into the Cascades of Washington state.

Boats and fish both find their way through this massive hydroelectric structure.

The only undammed section of the Columbia River in the United States has been preserved, ironically, by its proximity to the Hanford Nuclear Reservation.

Fill up your senses in this beautiful riverside garden, dedicated to the works of singer-songwriter John Denver.

This museum honors the first Spanish land grant in California which is still in the hands of the original owner's family.

The 10-foot-wide Long Beach home was built on a dare.

These four islands right offshore have waterfalls, colorful lights, fancy buildings, and a secret purpose.

The Southern California pop sounds of surf and sand were born right here.

This unique historical monument features large concrete spheres designed to resemble fallen stars.

An oft-overlooked, magically musical monolith that stands majestically between Arlington Cemetery and the Iwo Jima Memorial.

The hidden offices underneath Memorial Bridge have been locked up since 1976.

This grisly headstone doesn’t seem to be resting in peace.

The only female equestrian statue in Washington, D.C. is a 15th-century French heroine.

The word "Watergate" will forever be associated with the infamous scandal in 1972, but this fountain is famous in its own right.

The first memorial dedicated solely to the Black troops who fought for the Union.

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

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

One of the largest artillery pieces in the world sits in a Washington D.C. parking lot.

Washington D.C.'s most famous pianist, composer, and bandleader still tickles the ivories outside Howard Theater.

Decades before the scandal, this staircase on the river was a literal "water gate."

A bas relief commemorates the "Nuns of the Battlefield" who cared for soldiers on both sides of the conflict.

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

The beloved statue at the National Academy of Sciences is oh so inviting to sit on.

An overlooked memorial honoring the local Washington residents who died in World War I.