The world’s largest underwater sculpture is found just off the coast of Nassau.

The 28-foot granite map plots the locations of 40 theaters in New York City.

This vessel is believed to be the oldest operating fireboat in the world.

This landmark jazz venue is the oldest continuously running African-American club in the United States.

This restored house is like a time capsule of the president's unconventional inauguration.

Buffalo's abandoned concrete grain elevators are getting a second life.

These strikingly barren, rolling red hills were caused by bad farming practices.

The best place in the world to buy tinned fish.

Portugal's National Pantheon has a history of curses, collapses and financial problems.

Elaborately carved to showcase the glorious wealth that the age of exploration brought to the Portuguese empire.

This Industrial Age architectural and engineering gem helps visitors and residents alike traverse Lisbon, “The City of Seven Hills.”

This memorial includes fragments from one of the greatest tragedies in United States history.

Copenhagen's celebrated theme park and gardens.

This elegant arc of a waterfall marks a religious turning point.

A giant concrete orb in far north Iceland marks the ever-shifting boundary.

The Arctic Circle runs through this isolated spot north of Iceland.

Climb to the top of its spiral spire for spectacular views of Copenhagen.

These remote Florida islands have a history of sea turtles and sunken treasures, and one of the world's largest coastal brick fortresses.

Dramatic river bend surrounds a natural red-rocked pedestal.

The world's smallest drawbridge.

The colonial city's social history is reflected in its fanciful door knockers.

An inspired museum dedicated to the patron saint of enslaved people, inside the cloisters where he lived and died.

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

Concrete strongholds stand guard over the Golden Gate.