Founded in 670, this ancient mosque is an architectural time portal.

The largest and best-preserved Roman amphitheater in Africa was designed to seat 35,000 people.

Spend your honeymoon where the Devil had his wedding.

Disused seaplane hangar gets a second life as the jaw-dropping home of Estonia's museum of maritime history.

An empty relic of the Moscow Olympics crumbles away in Estonia's capital.

"There's nothing there," and other lies the KGB told us.

This restaurant combines two Finnish traditions in one place: warm-weather relaxation and outdoor carpet-cleaning.

Finland's oldest astronomical observatory once played a crucial role in seafaring and timekeeping.

This insurance company building reminds customers that witches, bears, and gnomes are out there, best be insured.

This endearingly discomfited urinating statue commemorates the sneaky pees had by us all.

An alien church provides much needed silence in the midst of a Finland shopping center.

The oldest continuously operating pharmacy in Europe.

The Guardian of Tallinn.

A subterranean house of worship carved right out of the bedrock.

The tiny, studious rodents greet visitors to the National Archives of Finland.

Architecturally stunning library serves as the hub of Finnish scholarly life and culture.

The first European-style university in western Sub-Saharan Africa.

The oldest of its kind in the country, this tree sits where formerly enslaved people are said to have founded the city of Freetown.

This Dutch art piece became a Russian icon.

A musical instrument played by the sea.

Now harmless, this looming post struck fear into the heart of medieval troublemakers.

This massive monument towers over the city as a constant reminder of the lives lost during Algeria's hard-won war for independence.

The best place in the world to buy tinned fish.

This unreal Portuguese palace looks as though it's made from a pile of different castles.