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

A gift to the children of Boston, this bronze bear represents playfulness, a spirit of love, and the warmth of big hugs.

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

This extravagant Art Nouveau rest stop features a million-dollar view of the Columbia River.

A roaring, awe-inspiring double cascade of icy water flows through woodland Oregon like something out of a Tolkien novel.

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

Created by a local artist, these quirky sculptures each have their own names and personalities.

Dedicated to one of the darkest moments in Irish history.

Ice cream stand, snack bar, and time capsule of milk conveyance.

This small glass cube is a peaceful out-of-the-way sanctuary at the busy airport.

A tiny piece of the Moon is embedded in this stained glass masterpiece.

Explore the legends surrounding these mythical sea creatures inside this museum.

The taxidermy remains of the most popular pony in children's literature.

The land is home to swimming ponies and a legendary 18th-century treasure.

This library is designed to commemorate the work of the Human Genome Project.

The final resting place of the tragic king and queen of the Jazz Age is tucked away in a small Maryland graveyard.

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

A secret greenspace hides atop a Capitol parking garage.

Architecture lovers won’t stop touching the National Gallery's 19.5 degree marble prow.

Perhaps the most scandalous statue of America's first president.

One of the largest helium balloons in the U.S. is a 112-foot ginormous orange.

The Lincoln Memorial has inspired many, even though a word on the inscription appears to be spelled incorrectly.

This mysterious structure by the Washington Monument is a flood barrier designed to protect the White House against rising waters.

Daredevil repair workers can worm their way out the access hatch, loop ropes over the apex and rappel down the monument.