The only monument to name all of the passengers and crew who died on the RMS Titanic.

This massive monument has been telling the time for 150 years—at a slight angle.

These murals stand as reminders to the troubled history of this Northern Ireland city.

Once one of the largest rooms full of books in the world, this bookstore basement is still a treat for bibliophiles.

The best place for scenic views of the DMZ and North Korea.

A large visitor's complex and place of remembrance on the outskirts of the DMZ.

The ornate structure is part of a building boasting more marble than the Vatican.

This volcanic plug boasts the longest recorded history of any Scottish stronghold.

This colorful but controversial ceiling has been likened to a 21st-century Sistine Chapel.

The dining hall that nourishes workers in Chornobyl's Exclusion Zone is also open to visitors.

From Ancient Rome to WWII, Neupfarrplatz has over 2,000 years of history underneath its main square.

Its collection includes a broad array of social, geographic, graphic design, and political history.

England's most famous front door has an accidental doppelganger.

The pretty iron lamp is a reminder of the architecture underneath London's streets.

This museum inside a museum tells the story of London's timepieces.

A little slice of Japan and its aesthetics in London's Holland Park.

A glorious pub known for a spiteful printing feud and its famous typeface lost—then found—at the bottom of the Thames.

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

The sumptuous ceiling was one of the last things Charles I saw before his execution.

A striking glass tribute to two sisters who suffered during Scotland's "Killing Time."

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

This 19th-century fountain's namesake animal isn't what you think it is.

This riverside restaurant has been serving customers since 1146.

A mine fire has been burning under the deserted town since 1962, but this church is still going strong.