A spectacular Petrine Baroque summer palace commissioned for Catherine I by Peter the Great.

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

An ancient and majestic fortress that played an integral role in Portugal's road to independence.

This statue once earned the distinction as one of the "Three Major Disappointments of the World."

The highest pedestrian bridge in Singapore looks like a series of undulating waves rising between two public parks.

A Stockholm metro station is home to an escalator that is not only the longest in Sweden, but among the longest in the world.

This extraordinary, multi-pillared monument depicts the fascinating history of Georgia.

With over 10,000 lights, this engineering marvel lights up the city after dark.

Visitors can sit and study the board with this Estonian chess legend and International Grandmaster.

A statue of the Soviet leader still stands in a quiet corner of Estonia’s most Russian city.

This behemoth bovine guards an Estonian town and is a memorial to the lost species.

This stunning limestone waterfall is the highest in Estonia.

This striking memorial is one of Estonia’s most controversial Soviet leftovers.

This soviet pilot's graveyard is filled with headstones made of airplane fins.

The oldest continuously operating pharmacy in Europe.

Relics from an era long gone, sit idle outside this Estonian museum.

The labyrinthine home of the National Archives of Estonia is an experimental blend of architecture, art, and history.

Rusted cars, trucks, and buses form a fascinating collection of Soviet-era machinery.

A decommissioned submarine base makes a great space for graffiti art.

Spend your honeymoon where the Devil had his wedding.

The gutted remains of this Estonian mansion are a monument to a tragic love.

A secluded art gallery hidden within the cellars beneath Tallinn’s medieval monastery.

Mysterious craters may have been home to an ancient cult.

The ruins of an Estonian prison are drowning in the quarry lake where the convicts were once forced to work.