The New York hotel where tragic visionary Nikola Tesla spent his final hours, destitute and alone but for the pigeons.

Cheap pizza and all of your naughty bedroom needs housed in a stunning example of Art Nouveau architecture.

Captain America, Sub-Mariner, and the Human Torch were all born in this art deco Manhattan masterpiece.

Wine bottle sculpture with a ship's stateroom inside.

The name of this tiny pocket park tucked between two buildings on Manhattan's Upper West Side is Latin for its location: "seventy-one."

Once considered the height of medical modernity, this structure is now the oldest remaining component of Roosevelt Hospital.

Two large-scale sculptures of Adam and Eve greet visitors in the nude at the Time Warner Center in NYC.

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

Blighted Irish field and the ruins of a 19th-century cottage on the edge of urban Manhattan.

Manhattan's lighthouse, erected at the insistence of the unsinkable Molly Brown.

Sweden's "good old days" painstakingly re-created in a model village.

The Swedish flag over this small naval fort signals that the nation is at peace.

An ancient Viking runestone hidden in plain view in Stockholm's old town.

It is said that each of the white stones in the red facade of this medieval house represents the head of a murdered Swedish noble.

It houses the remains of a 17th-century version of the Titanic.

18th century opera in its original splendor.

The entire length of the border is marked by a 20-foot-wide slash through the trees.

Two thirds of this Montreal neon icon has survived to flash another day.

This 1967 experiment in modular architecture was designed to be a new model for urban living.

Designed by Buckminster Fuller, this relic of the 67 Expo survived fire and ice.

Every year, the colorful murals of Montreal get a complete makeover.

Small ship votives hang from the vaulted ceiling of this port-side church with a Latin inscription on the wall.

A historic Montreal market that was the city's agricultural hub for over century.

Montreal's colorful subway station shows its support of the local LGBT+ community.