A historic bridge with a lovely acoustic anomaly.

The unluckiest U-boat in the entire German fleet is now on display in a Chicago museum.

Finally, you don't have to be a pious Swedish seaman to relax like one.

Whimsical cookie-themed plaques mark the birthplace of the Fig Newton.

Solar powered Spectacle Island features all-green facilities.

Hill-like structures formed by glaciers and sandy spits of land.

Trash escaped from a landfill to fill beaches with all kinds of treasure.

This evocatively named natural crevasse was created by a torrent of water that smashed right through a granite deposit.

Read a book next to a Midtown waterfall.

One of only two commuter aerial tramways in the United States.

The feral felines of Roosevelt Island have a small army of allies and an abandoned hospital all to themselves.

A crumbling hospital from the 1850s on Roosevelt Island.

This city park was once a lookout point for George Washington’s army during the Battle of Brooklyn in 1776.

The cuisine at this Sheepshead Bay spot tells the story of a displaced Muslim Chinese community.

Try a classic Necco candy bar being resurrected in a small suburban shop.

The ruins of one of the first railroads in the U.S. lie hidden within a neighborhood cul-de-sac.

From economic backbone of a community to deadly diving hole, these former stone quarries are now a park for rock climbers and graffiti artists.

This plaque commemorates the call between Alexander Graham Bell and Thomas A. Watson.

Memorial to a beloved puppeteer as well as all street performers.

This tiny, painted door at the base of a tree stump has been a fixture of the Harvard University campus for decades.

This tower commemorates the spot where George Washington hoisted the Grand Union flag.

This Dutch-styled residential building was originally a cocoa company's World's Fair showpiece.

This beautiful architectural gem was the first waste treatment facility in Boston.

No one really knows how these old hobby horses got here, but the herd keeps growing.