From Austrians to Nazis to Soviets, this historic Budapest fortress has a history as complex as the city itself.

This Welsh village gave itself a ridiculous name in a publicity stunt a century ahead of its time.

The largest oak in England is said to have been the hideout of Robin Hood and his Merry Men.

Golden Gate Park's historic collection of plants.

Hollywood's most famous landmark, the "temporary" sign that has stood for decades longer than intended.

This ancient Roman bridge and aqueduct still stands as a wonder of classical construction.

Increasingly decayed figures stand as a powerful reminder of the human costs of Czech Communism.

One of the world's steepest streets seems to have houses sliding down it.

Over two million dolls have been healed during this hospital's century in business.

This historic observatory contains the world's oldest refracting lens telescope.

Recovered from the brink of extinction, at home in the Financial District.

Faceless white figures loom over the city from the rooftop.

Twice a day one of these tragic bronze mariners drowns with the tide to remember all those the sea has taken.

Once the tallest building in the world and the site of “the highest dinner ever held in New York” this building now holds the most expensive penthouse in the city.

This electric green sulphur lake in New Zealand looks like a cartoonish radioactive dump site.

This historic Melbourne bullet factory is fully encased in a massive glass and steel cone.

The tomb of one of Scotland's bloody historic villains is a magnet for bumbling desecrators.

Ruined 11th century abbey built by King David I in Edinburgh, Scotland.

Once housing children next to hardened criminals this historic jail once displayed Ned Kelly's skull until it was stolen.

Ancient snack bar of the Roman Empire re-opened.

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

Pilgrimage site for star-crossed lovers.

Relics of the 1894 Midwinter Exposition continue to delight visitors today.

Floating man-made island and upscale restaurant.