A layered tribute to the work of mosaicist Isaiah Zagar.

This local gem houses the largest collection of pre-Raphaelite paintings outside of the U.K.

A modern ghost town whose inhabitants were driven away by the growth of nuclear power.

In which a local geological marvel becomes a quaint roadside attraction.

What looks like a simple quaint estate in rural Pennsylvania was in the 18th century home to a small monastic community.

Ant sculptures march up the side of what used to be an iconic spot in punk rock lore.

This charming colonial alleyway is one of the oldest continuously used residential streets in the U.S.

A clone-tree in Washington Square Park sprung from seeds that went to the Moon and back.

This elaborate towering structure was once famed for its revolutionary height.

The sounds of the world's largest fully functioning pipe organ dazzle shoppers at a Philadelphia Macy's.

Mural made of 100,000 pieces of hand blown glass, and until recently, the largest glass mural in the US.

The first American department store, and home to the largest operating musical instrument in the world.

An Irish Memorial commemorating those who perished due to potato blight.

A daily replay of the experiment that proved the rotation of the Earth.

A tour de force of a fountain, memorializing a man who loved fountains more than anything else.

A rare view of a preserved Victorian science museum.

Tour the dark and beloved poet's former cobwebbed basement, which may have inspired "The Black Cat."

This historic iron-working village is now a ghost town so immaculate that it looks as though it was recently built.

Philadelphia boasts one of the best — and most often overlooked — traditional Japanese gardens in North America.

One of the oldest log cabins in America is one of the last of its kind this historic Swedish dwelling remains a piece of living history.

One of the world's largest model railroads is a mind-boggling achievement.

The mysterious canine hides atop a drain pipe on the back of the building, some say as a sneaky shoutout to Yale.

The final resting place of many of New Jersey's most famous residents, including U.S. history's most in-vogue antagonist, Aaron Burr.

One of New Jersey's oldest surviving buildings still bears the mark of our former British overlords.