From Nunavut to Tierra del Fuego, you won't find any lighthouse higher than this one.

A sudden, striking cluster of hills south of Padua has been attracting visitors for centuries.

The largest natural travertine bridge in the world is nestled in a small canyon in central Arizona.

Reforestation in action is the main attraction in this abandoned quarry.

Harry Potter once visited this massive limestone cliff, which was carved by an ancient glacial river.

This lost city belongs to one of the earliest civilizations in the world.

This imposing modern citadel started out as a home renovation project.

Spanish religion mixed with local architecture has yielded a network of churches unlike any other.

This 16th-century monastery has been turned into a surrealist architecture compound.

A beautifully detailed Victorian house designed to be easy to flee, built by a man haunted by fire.

At this Denver landmark, the meals are compulsory, the sopapillas are complimentary, and the insanity is everywhere.

What remains of the summer palace of King Kamehameha III.

A railroad tunnel that, upon its completion, was considered one of the engineering marvels of the modern world.

Surprisingly aquamarine waters fill deep lakes formed at the end of the last ice age.

A Victorian Gothic masterpiece housing a world-class collection of rare books and manuscripts.

The largest necropolis in the Southern Hemisphere.

New Brunswick's tallest mountain is the highest point in all the Maritimes.

High plateaus and beautiful waterfalls frame this ecologically significant nature preserve.

The remains of the last Bosnian fortress to fall to the Ottomans are still standing.

Once decrepit and slated for demolition, now one of the longest pedestrian bridges in the world.

A winding, cliffside stretch of road overlooking the Delaware River.

A grand imperial capital left to fall into magnificent ruin.

A small sculpture garden that provides a microcosmic representation of California.

A 19th-century Baja cantina that many say is the birthplace of the margarita.