César Baldaccini's iconic sculpture of a 40-foot thumb stands tall in La Défense.

This surreal statue brings a famous French novel about a supernatural cad to arresting life.

An overlooked marble is the only surviving in-place 18th century example of the measurement that changed how we define distance.

Shop at the 200-year-old store where Julia Child stocked up on copper cookware.

This renovated Art Nouveau bathroom from 1905 is worth the price of admission.

This innocuous-seeming building is actually the remnant of a major wartime brothel.

A giant silver apple a day keeps the perils of capitalism away.

Montmartre's sole surviving windmill became an iconic landmark for 19th-century painters, artists, and bohemians.

A sacred lake composed of over 300 separate pools of highly concentrated minerals.

Spectacular volcanic cliffs along the Crooked River invite hiking, rock climbing, and photography.

The National Park Service’s best-kept secret with views that rival any in D.C.

This unassuming passageway played a key role in one of the most important events in U.S. history.

The oldest continuously operating fish market in the United States.

This lonely waterfront memorial to the men of the Titanic was erected by the "Women of America."

"Congress may voluntarily remain in session throughout the summer, in order that our Congressmen may be protected from the intolerable discomforts and dangers of the ordinary outdoor weather!”

The national park was once a plantation estate.

The final residence of an educator, civil rights leader, and presidential advisor was also the first headquarters of the National Council of Negro Women.

Housing the National Women's Party since 1929, this historic house is now a monument to the fight for gender equality.

One of the three perfect vellum copies of this historic book known to exist is on display in a specially-designed case.

The 5.5-mile ring of steel posts around the Capitol Building is one of the largest (and most uniform) of its kind in the world.

After James Madison's death, his wife and former First Lady Dolley Madison lived in this yellow building near the White House.

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

This rare triple-jurisdiction drawbridge passes through Virginia, Maryland, and Washington, D.C.

A museum cafe showcases Native American dishes and indigenous ingredients from across the Western Hemisphere.