A mysterious emblem tucked in an small alleyway is actually the coat of arms of a heroic medieval family.

The deepest metro station in the world.

340-foot statue built to honour the Heroes of the Soviet Union.

The tallest hotel in Europe.

World's largest bell sits on the grounds of the Kremlin in Moscow.

Former headquarters of the KGB.

The gorgeous entrances into the city's underbelly look more like grand halls than subway stops.

This building holds the embalmed remains of the leader of the Bolshevik Revolution.

A 250-year-old timepiece-automaton adorned with golden mechanical birds, which still sing to this day.

This unique sculpture is often overlooked by pedestrians.

Five soviet prisoners of war were executed at this spot just days before the liberation of Norway.

The last fully functional fortress of Germany's World War II Atlantikwall.

This futuristic bridge is one of the longest self-anchored pedestrian bridges in the world.

A priest with no formal artistic training used basic house paint to create gorgeous religious scenes inside this historic church.

A controversial memorial at the place where Captain Cook met his violent end.

This unusual lava tube spouts seawater during high surf.

Take shelter from Hawai'i's tropical heat under the massive canopy of largest Banyan tree on the island.

This blowhole is supposedly caused by a trapped monster.

These ancient sacred grounds granted amnesty to those who managed to reach them.

Perched on a spindly rock spire in a Greek archipelago, this lighthouse would make a perfect wizard's tower.

This unique rock formation is quite the local celebrity, although one day it may come crashing down.

According to the Guanches, the aboriginal people of the Canary Islands, the king of evil lives inside this volcano.

Behind this pair of dragon trees, there is a tragic story of lost love.

Spanish architects used seized Muslim gravestones to rebuild parts of the fortress.