The site of the famous Nazi book burning campaign of 1933 remembers its "Night of Shame".

A valley of unique erosion patterns lends to a view like nothing on Earth.

A series of waterfalls so massive they straddle the border of Argentina and Brazil.

Go inside to really appreciate this 500-year-old technological masterpiece.

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

Hear the quietest sound from across the dome.

Breathtaking and huge 430 year old maps of Italy.

A pedestrian island in the middle of world-famous Times Square emits a strange (and purposeful) humming noise.

This historic address is home to the beloved ball and is an almost totally empty building among the most expensive real estate in the world.

The glowing blue Nymphaeum of Emperor Tiberius.

Erotic art covers the walls of the largest ancient pleasure palace.

Ancient snack bar of the Roman Empire re-opened.

This 1,300 year old monastery built atop a single rock was once only accessible depending on the whims of the tide.

Construction of Barcelona’s iconic (but controversial) church was finally completed in 2026—a century after the death of its architect.

Longest fortress system anywhere in Europe.

An ancient knight and a symbol of the city's freedom.

It houses the remains of a 17th-century version of the Titanic.

Opulence and fantasy collide in this royal chair which is supposedly made with unicorn horns.

The world's northernmost aquarium looks like it has fallen over.

The most loyal of little dogs, or a Victorian era publicity stunt?

360° views of the city plus five floors of optical illusions and hands-on science.

A six-ton wedding present for the King of the Scots.

The final resting place of soldiers' loyal canine companions.

A 18th century graveyard and its astonishing cortege of macabre iconography.