Largest Roman Catholic church in North America.

A diminutive plaque recalls the treetop sniper who almost killed Abe Lincoln.

An abandoned 1970s theme park that has been turned into a space for waterfront walking.

A fantastic place to see murals, and an important location in the history of Toronto's legal street art scene.

Don't get it twisted: This is the oldest pretzel bakery in the United States.

D.C.'s first central library was born out of a chance encounter with the philanthropist whose name it bears.

Catch a scenic view of Warsaw's Old Town from the top of a centuries-old dumping ground.

The world's only museum devoted to the wonders of fluorescence.

A Dutch passageway's artistic, aquatic-themed makeover pays tribute to the capital city's famed waterways.

A beautifully eclectic mix of architectural styles.

Amsterdam's narrowest house facade is a monument to 17th-century tax evasion.

A floating cat sanctuary on an Amsterdam canal.

The eerie ruins of this feudal fortress witnessed the execution of 60 conspirators in 1387.

First founded in 1472, this is the oldest bank in the world. Its history may explain why we call financial institutions "banks."

Renaissance hospital featuring a rotating door into which unwanted babies were dropped.

The beautiful 1920 Pantages Theatre remains hidden just underneath the LA Downtown Jewelry Exchange.

The Pennsylvania landscape depicted by a quarter mile of mosaics made from used road signs.

This Art Deco service station has been providing tune-ups and turning heads for close to a century.

This titanic java kettle is one of the many kitschy landmarks located along America's OTHER famous highway.

The yawning maw of this pagan visage is said to bite off the hands of liars.

This Niagara Falls tourist trap is a world bright with neon and curiosities that will inspire love, hate, or a mixture of both.

Niagara Falls holds a special place in Nikola Tesla's history, so they put a statue on it.

This stunning blue and gold room changed cities twice before becoming part of the Smithsonian.

This illuminated sign was the first of its kind in Canada and remains a vestige of the Atomic Age.