A 22-foot stainless steel quilting needle pays tribute to a local connection to fiber arts.

A collection of outdoor art by renowned muralist Robert Dafford depicts the history of a flooded city.

This 38-drawer structure claims the superlative title, but it isn't the world's only giant filing cabinet.

Cryptid lake monster honored with its own monument.

Stand at the center of this lakefront sundial, and you'll become part of the timepiece.

True to its name, this bouncy walkway may be the world’s smallest suspension bridge.

The world's oldest and largest museum of mass transit vehicles.

This colorful theme park dedicated the official fruit of Maine serves sweet, tasty treats.

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

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

The winding route passes through an enclosed alleyway, two tunnels, and leads to the White House basement.

A painfully obvious spy house sits right across the street from the Russian Embassy.

One of the dwarven trees dates back to 1625 and survived the Hiroshima bombing.

With over 100 jam-packed rooms to explore plus elaborate tea services and events, the Mansion on O Street is a hidden treasure.

Home to items never before seen by the public.

The United States Capitol's former columns still stand.

Bubbling up from deep underground is the warm crystal clear water that fills the Warm Springs Pools, America's oldest spa.

One of the last active volcanoes on the Eastern seaboard.

This once-palatial plantation may have been the site where a draft of the Declaration of Independence was written.

A son's promise to his dying father in the form of a covered bridge filled with thousands of seashells.

This museum on a college campus pays tribute to the Arctic and to two explorer alumni.

A mysterious spot where the laws of gravity seem not to apply.

These powerful, if squat, Canadian waterfalls flow in different directions depending on the time of day.

This sprawling collection hides many charms.