Giant, friendly pelicans in Central London, the most unlikely of places.

The perfectly preserved underground rooms where Churchill plotted the war against Germany.

A faded reminder of what was once a common sight in London during the Blitz.

The "beautiful" equation predicting the movement of all electromagnetic particles is engraved in front of Newton's tomb.

A Manhattan courthouse hides a small but scathing memorial to Holocaust injustice.

There are owls with glowing eyes in Herald Square.

A 19th-century politician who died after walking home in a blizzard is honored with this Manhattan statue.

This monument to a veteran of the Mexican-American War is one of only two in Manhattan that serve as an actual mausoleum.

A bit of retro transportation flair preserved in the world's largest department store.

The world's largest rotating world.

When the town wouldn't allow the fast-food behemoth to build a new restaurant, they put one inside an 1850 home.

An unusually designed bridge from the 1920s was built to withstand the tides and winds of Maine.

This Fifth Avenue church has long been the favored worshiping place of Broadway actors and vaudeville performers.

A clock set into the concrete outside a Manhattan jeweler has been telling time underfoot for over a century.

This anonymous businessman sculpted in bronze became an enduring memorial after 9/11, and had been mistaken by rescue workers for a survivor in the rubble.

This sculpture by artist Fritz Keonig survived the 9/11 attacks and now stands as a monument to the victims.

The last living thing to come out of the rubble after 9/11 is now a symbol of hope and resilience.

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

A whimsical, but often overlooked clock in Park Avenue.

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