A whimsical, but often overlooked clock in Park Avenue.

Need to book a room at the Hotel Pennsylvania? Just dial up 6-5000.

A three-story copper skybridge connects two Manhattan buildings with Art Deco luxury.

Church in Manhattan holds the bloody sock of Padre Pio, among with many other unusual relics.

Stunningly detailed mosaics in a New York subway station bring life to the Weimaraners of artist William Wegman's work—and to thousands of commutes.

An annual extravaganza of Broadway theater memorabilia.

The 28-foot granite map plots the locations of 40 theaters in New York City.

A pedestrian island in the middle of world-famous Times Square emits a strange (and purposeful) humming noise.

Amid the marketing blitz of modern Times Square is an elegant holdover from its showbiz glory days.

The only remaining building in New York to see the inauguration of a president is being slowly overtaken by a grocery store.

The origins of midtown Manhattan's anachronistic wooden farmhouse remain a mystery.

The world's oldest hologram gallery and the labyrinthine laser laboratory of a holography pioneer.

The name of this famed hospital was once a byword for the horrors of medical and psychiatric care.

A small part of lower Manhattan is actually made from a bit of England.

Along a California highway is a kind of Jurassic Park made of metal.

The ghostly remains of an accidental sea.

A glimpse into the lives of the the Miwok and Paiute people in Yosemite National Park.

Under the right circumstances, this waterfall in Yosemite briefly turns a luminescent fiery orange.

Silverware in the sidewalk outside a grocery store cements this neighborhood’s Italian culinary history.

Shelves covered in dozens of coffee bean varieties fill this North End institution.

One woman’s obsession gave birth to this lovely oddity at the Boston Public Library.

The oldest Italian café in Boston, this spot also serves as a veritable museum of vintage coffee ephemera.

This popular Boston haunt is reminiscent of a time gone by, when slow cafes and sweet-smelling smoke wafting from patios was the norm.

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