Mrs. Mallard and her brood are a beloved fixture in Boston Public Garden.

A former waterfront market is now in the center of town due to some interesting Boston engineering.

Berthed at the Charlestown Navy Yard in Boston, "Old Ironsides" is the oldest commissioned warship still afloat.

The site of Paul Revere's historic two lantern warning.

Since 1947, this living history museum has been providing an immersive look at life in Plymouth Colony.

Three and a half miles of cliffs, rocky beaches, Gilded Age mansions and 40 Steps to nowhere in particular.

These light, hollow rolls have been linked to Acadia National Park since the 1890s.

This candy-striped tower is the farthest east you can go in the United States.

A precariously balanced rock perches on the edge of a cliff created tens of thousands of years ago by glacial erosion.

This 19th century granite fortification is one of the most well preserved forts in New England.

Less a museum than a bizarre fantasy world created by artists and engineers.

A serene plaza that commemorates one of the Granite State's most iconic figures.

The granddaddy of all tourist traps, built on ice water, jackalopes, and a giant dinosaur.

An ornate Art Deco tile mosaic representing Nebraskan life, both modern and prehistoric.

An architect's childhood fantasy treehouse made real.

One of nature's most well-scheduled phenomenons resides in Wyoming's Yellowstone National Park.

A beautiful geyser under environmental threat.

The first declared National Monument in the United States.

Erosion and various mineral deposits give this striking canyon its distinct color and soft appearance.

This rugged area of red rocks and arches is often considered one of the most beautiful places on Earth.

A tunnel with windows, so you don't miss out on the impressive views.

The unusual patterns in this rock formation result from two distinct modes of weathering.

Giant, natural amphitheaters made of delicate geological formations called "hoodoos."

The hike through a narrow river flanked by the 2,000-foot-tall walls of Zion Canyon is one of the best in the world.