One man's remarkable private collection of art from around the world.

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

This sweet-toothed bear searching for snacks has been a symbol of Madrid for decades.

Madrid's romantically ornate crystal palace has been offering shelter to plants and art for over a century.

The most elaborate of 12 medieval arched doorways to the old city of Burgos.

The final resting place of the great navigator, or maybe his brother.

The Roman city was the birthplace of various emperors and is home to one of the empire's most impressive architectural feats.

This legendary giant, born from vegetables, terrorized townspeople and cheated local children in games.

This heavily worn bas-relief was once an honored fertility symbol.

Hidden along this old street in Antwerp is a surreal monument of a bronze arm sprouting four hands.

Most prolific publishing house in the 1600s open to the public.

Despite the groans of archaeologists, this astounding groups of Bronze Age petroglyphs have been painted red for tourists.

An abstract monument to a symphonic composer.

An alien church provides much needed silence in the midst of a Finland shopping center.

This medieval castle was reconstructed by Carlo Scarpa.

The meteor that sealed the fate of the dinosaurs landed at this site, one of the largest impact craters in the world.

This massive mural by famed pop-artist Keith Haring was hidden for almost 30 years until its 2018 rediscovery.

After the owner of this Art Nouveau home died, it was turned into a museum displaying a lifetime dedicated to art.

A room in New York City that contains 250 cubic yards of dirt worth a million dollars.

This mosaic dedicated to John Lennon was tended for years by a Beatles super-fan.

Great place to have a drink and a bite to eat in an atmosphere laden with New York's Bohemian past.

Mysterious 500-year-old tapestries depict a unicorn hunt.

Elevated freight railway turned wildly successful urban park.

Giant topiary dog once played a role in a terrorist bomb plot.