The Incredible Hulk, Yoda, Mulder and Scully, and many many others watch over the mean streets of Toronto.

The Victorian-era greenhouse is stuffed with tropical plants, and open 365 days a year.

A 98-room castle in the middle of Toronto that bankrupted a 19th century electricity multimillionaire.

This Transylvanian church has changed its denomination four times.

This hauntingly beautiful cemetery outside a medieval citadel is full of winding paths and ivy-covered graves.

Nine centuries-old fortresses guard the walls of this medieval Romanian city.

Romania's triumphal arch looks out over Bucharest.

This communist behemoth is the heaviest building in the world and a legacy of a brutal regime.

A fire once nearly devoured this gorgeous 14th-century Gothic cathedral.

The European towns of Brașov and Râșnov each have proud signs reminiscent of the Hollywood sign.

Something's watching you.

The possible imprisonment of Vlad the Impaler here earned the medieval castle its nickname, "Dracula's Castle."

This elaborately decorated, fairytale-like Romanian royal palace is one of the most striking castles in Europe.

This massive underground salt mine now holds a sci-fi theme park in its depths.

This fairy-tale castle would make Dracula (who is said to have been imprisoned there) jealous.

Hot Doug's "Hot Dog" Stand.

An unassuming store hides relics of its former life as the jazz club that hosted some of the best black performers of the 1920s and '30s.

The palatial McDonald's that inspired Wesley Willis.

A display of magnificent stained glass windows is the first exhibit of its kind.

The last masonry skyscraper ever built reveals a transitional moment in architectural history.

Huge abstract sculptures of the Puerto Rican Flag.

Partially submerged Buddha heads freckle Chicago’s neighborhoods.

A 400-foot-tall tall map of Chicago makes this once-ignored building stand out.

These chunky stone towers out in Lake Michigan are the key to Chicago’s drinking water.