Giant, friendly pelicans in Central London, the most unlikely of places.

One of Antoni Gaudí's most classic buildings is well-known for its "dragon-back" design.

A chain of 16 wondrous lakes formed as a result of the gradual dissolution of soluble layers of bedrock.

"Stairs of the Turks", a chalky white cliff eroded conveniently into stairs, allowing for easy pillaging.

Roman ruins top white travertine terraces formed by ancient hot springs.

The world's most active stratovolcano is almost always erupting.

A volcanic old faithful, Stromboli has been erupting continuously for the last 2000 years.

This Venice bookstore has resigned itself to constant flooding by keeping its books in bathtubs and boats.