This vast kitty-themed collection illustrates the history of human-cat interaction.

Step past the gas pumps and into a fine French bistro.

An unfinished rail tunnel that has since been used to house cheese and bats.

The 10th-tallest pyramid in the world, this former sports arena is now home to a massive Bass Pro Shops store.

Every day a troupe of pampered water fowl walk the red carpet to their favorite fountain.

The hotel where Martin Luther King Jr. was shot is now a museum dedicated to his work.

An unexpected Easter egg lurks in the background of a cherub wall relief at the Breakers mansion.

This Rhode Island mansion was a stand-in for the exteriors of Collinwood in the original "Dark Shadows" series.

Three and a half miles of cliffs, rocky beaches, Gilded Age mansions and 40 Steps to nowhere in particular.

This is the spot where the bloodiest battle in the American Civil War may have started.

This Civil War monument was designed by an eccentric architect and Gettysburg veteran.

This monument marks the beginning journey of a wounded soldier's leg that ended up almost two states away.

The last remnants of Fort Pitt also hold the distinction of being the oldest structure west of the Allegheny Mountains.

"Where the ducks walk on fish."

This dramatic rail curve was once the target of a failed Nazi attack.

A quirky collection of outsider art made from automobile parts.

A 2,000-year-old Adena burial mound located along a busy street in Columbus, Ohio.

You can walk through the first Boeing Air Force One, which famously carried JFK's casket from Dallas back to D.C.

Sculptor Vadim Bora's bronze felines pay playful homage to architectural features no longer extant along Asheville's Wall Street.

Formerly the most gerrymandered district in the U.S., it twisted and turned along racial borders.

The enormous 250-room Vanderbilt mansion conceals hidden doors and secret passageways.

This pole near the infield rail at Belmont Park marks the jaw-dropping margin of Secretariat’s 1973 Belmont Stakes victory.

Rochester's signature culinary delicacy.

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