Though strikingly beautiful, Seattle's other railway station is now largely forgotten.

This former coal gasification plant found a curious second life as a popular public park.

A museum dedicated to the history and exploration of both popular music and science fiction.

A walk through the historic city center, under the streets of Seattle.

A giant Troll lurks under one of Seattle's oldest bridges.

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

A gorgeous mural outside a beloved D.C. restaurant pays homage to famous Black Americans.

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

Through the decades, Black music stars have performed at this historic hub for music and the arts.

D.C.'s first central library was born out of a chance encounter with the philanthropist whose name it bears.

This whimsical campus lawn is dotted with large sculpted numbers and hidden mathematical formulas.

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

A Civil War Museum with some notable medical antiques.

An unassuming 13-acre park is home to over 12,000 roses.

A tribute to the beloved, kind-hearted "homeless mayor" of Silver Spring.

Giant acorn-shaped 19th century gazebo from which suburban Washingtonians gazed upon the original "silver" spring.

The longest escalator in the Western Hemisphere takes over three minutes to ride down.

An astounding collection of medical specimens, including bits of President Lincoln.

The romance of early commercial flight still fills this Art Deco destination.

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

Parking garage where Bob Woodward met Watergate source "Deep Throat."

The tunnel under the Capitol Building where Congress takes out its trash.

An easily overlooked memorial to a Ukrainian famine-genocide that killed over 4 million people.

Railroad officials in the early 1900s sought to spare travelers the sight of Roman soldiers’ private parts.