Museum dedicated to the terror regimes of Hungary.

Built in 1870 at the bridge that connected Buda and Pest, this spectacular incline railway was almost lost forever during World War II.

After a profound show of devotion for his master, a dog becomes the symbol of loyalty for an entire nation.

The original "capsule building" is a masterpiece of Metabolist architecture.

An exhibition of preserved locomotives housed in a 1950s depot shows the history of Denmark's railway.

The remains of the observatory of the Danish astronomer who first measured the speed of light.

The only surviving piece of Copenhagen's 16th-century defensive wall.

This huge industrial sculpture looks like a UFO and a factory had a baby.

Denmark's famous pseudo-hill.

The northernmost point in Denmark is a turbulent sandbar created by two clashing seas.

This Danish rock field is actually a sprawling ancient cemetery holding the bodies of 700 Vikings.

The old observatory in Copenhagen has a spiral corridor used as a racetrack.

A natural wonder in south Denmark.

Old Danish castle immortalized in Shakespeare's Hamlet.

Danish tourist destination well known for open stalls where vendors sell marijuana on the street.

Pre-Nazi swastikas adorn the sculpted pachyderms flanking this brewhouse portal.

Six beautiful wooden giants are hidden around Copenhagen.

Vortex-shaped aquarium hosts Europe's largest school of piranhas and other ocean creatures.

The de facto symbol of Copenhagen is this bronze fairytale which cannot seem to keep its head for very long.

A 19th-century subterranean reservoir repurposed as a contemporary art cave.

Copenhagen's celebrated theme park and gardens.

Cold war icon and onetime "hole" in the iron curtain.

The walls of Germany's Parliament still show the scars of the Red Army takeover in World War II.

Berlin's old airport.