This 19th-century building inadvertently preserved the handprints of its builders within its walls.

A recreation of the doomed ocean liner in the middle of the Smoky Mountains.

An unexpected but incredible collection of wildlife dioramas spanning rainforests, swamps, forests, and plains.

A dramatic, 360-degree recreation of Pickett's Charge in the Civil War.

This futuristically sylvan church is a glass-enclosed marvel of modern architecture.

This monument on Breed's Hill proves that one of the most famous battles of the Revolutionary War is misnamed.

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

Each August, one of the largest religious (and food) celebrations in the country is held in Boston.

This impressive Boston holy house is the American mecca for Christian scientists.

One of the last remaining World War II Victory Gardens in the U.S. is quietly growing across from Fenway Park.

Couple's personal collection of pinball machines turned public pinball museum.

If all members were present at the table, a sixth of the world's wealth would be under the same roof.

Constant erosion has created a surreal landscape of bleached and preserved fallen trees.

A museum marks and documents the site of the Titanic's launch.

An Irish town has built a statue to a silent film actor simply thanks to the holidays he once spent there.

Ireland's most remarkable collection of these curious cone-shaped houses is worth the buzz.

This bug-eyed water wheel uses the power of the Sun to clean up Baltimore Harbor.

Controversially claiming the title of world's biggest bass drum, UT's Big Bertha was once made radioactive by the Manhattan Project.

Legend has it the commander of the defenders drew a fateful line in the dirt with his sword just before the final battle.

An ivy-covered arch bridge dedicated to Tejano music singer and legend Rosita Fernandez.

These boots are made for selfies.

The only road through the heart of Glacier National Park.

Amidst the bustling streets of Dublin, there is a hushed garden that is dedicated to "All those who gave their lives in the cause of Irish Freedom."

The somber sculptures commemorating Irish Famine on the river Liffey in Dublin.