The marble facade hides a little-known medical museum with early surgical instruments and rare copies of canonical texts.

The absurd creation is a compulsory destination for selfies in Buffalo.

A tiny plaque marks the location of the water source that facilitated the birth of modern-day Boston.

A whale rib was used to advertise the store by the arch that offered exotic goods from far away.

The world’s oldest and biggest bookstore stocking only mystery, crime fiction, espionage, and thrillers.

Scores of vintage street lamps shine along L.A.’s Miracle Mile.

Chicago's Navy Pier on Lake Michigan was a training hub for aircraft carrier pilots during WWII.

Fragments of architectural wonders from around the globe are embedded in the newspaper building's walls.

Just like the real 36th president of the United States, animatronic LBJ amuses visitors with jokes and stories.

Marie told fortunes from her small stand on the Boardwalk for decades, including to a young Bruce Springsteen who would busk outside her booth.

The front yard of an Upper East Side town house hides the last fragment of one of New York's most famous theatres.

This tiny museum's sizable collection is jammed into a former underground public toilet.

The "Seinfeld" diner.

The iconic Chicago sculpture hides a beautiful and easily overlooked plaque on the backside.

A blank headstone topped with a pile of pennies marks the final resting place of the infamous assassin.

An extensive collection of reliquaries containing the bones of saints housed in the largest Catholic church in Venice.

If a glacial river suddenly diving into a sheer chasm via a dramatic, multi-stage waterfall isn't peak Iceland, it's certainly close.

A second generation sun-powered marvel lights up the night.

This valley of hot springs and boiling mud pots is home to the record-holding "Geysir," which originated the English word.

The small peaceful island off the Venice tourist circuit is where the city began more than 1,500 years ago.

The only museum with its curator—and her pets—buried inside.

A men’s restroom became a sandwich shop.

The gravestone of the suffragist leader attracted extra visitors during the 2016 election.

These unassuming lighthouses have seen the first reading of the Pledge of Allegiance, the first wireless transmission, and more than one mystery.