This ultra-modern California span is actually a titanic solar clock in disguise built by famed architect Santiago Calatrava.

This stately clock was gifted from China's last imperial government to the people of Mexico.

This old-school café is famous for serving coffee, chilaquiles, and the Cuban Revolution.

The only parking meter in the entire town, it is surrounded by 100 free spaces.

If you dial the number in this abandoned office window "Sam Spade’s" secretary will ask you to leave a message.

New York City's smallest piece of private property.

The oldest operating apothecary in the US has treated everyone from Thomas Edison to Mark Twain.

Red frames showcase remnants of one of New York's original subway stations.

This whimsical group of statues is a favorite of children who love to climb all over Lewis Carroll's beloved characters.

The "Seinfeld" diner.

The oldest surviving botanic garden in the United States.

This little-known collection holds everything from "Dracula" notes, to the manuscript of "Ulysses," to the forged works of Shakespeare.

America's most famous museum of medical oddities is home to the remains of Albert Einstein's brain.

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

Yo, Adrian!

The world’s first penitentiary, meant to be humane, drove men insane.

This forgotten building was one of the few Philadelphia-area breweries to survive Prohibition.

One of Philadelphia's largest murals resides hidden under this bridge.

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

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

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

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

This colorful colonial neighborhood in Panjim is one of the only Latin Quarters in Asia.

The mysterious empty cupola behind the monumental arch points to an ancient prophecy of Delhi.