A huge monument to a bizarre book written by Turkmenistan’s longstanding dictator.

Where Stoddart and Connolly suffered in the infamous Bug Pit.

Ancient barriers wrap around what was once an important stop along the Silk Road.

This "tower of death" has acted as an observatory, a religious hub, and an executioner's lair.

The Avenue of Mausolea is a series of grand palatial tombs.

A traditional American farmhouse plopped in the middle of a Piccadilly courtyard.

This ancient Egyptian obelisk still bears the wounds of World War I.

This unassuming building produced some of the world's most famous bells.

The bridge is a secret gallery of discarded gum that has been transformed into miniature masterpieces.

Behind one of the world's most impenetrable vaults is a massive collection of retail silver.

This innovative steam machine was no doubt the most famous of the pioneer locomotives.

The commemorative stone column conceals a secret laboratory.

These mysterious Viking chess pieces spent centuries hidden on a remote Scottish island.

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

This beautiful deer park was built so King Charles I and his court could go hunting while escaping a deadly plague outbreak.

Where condemned pirates met their grisly end at the gallows on the River Thames.

The watery entrance for condemned prisoners heading to the Tower of London is still visible along the Thames.

Two plaques commemorate the site of Shakespeare's first theatre.

It houses the remains of a 17th-century version of the Titanic.

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

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

Copenhagen's celebrated theme park and gardens.

Ever-growing collection of devils in art.

An old hill fort covered in over 100,000 crosses is a symbol of Lithuanian nationalism and beliefs.