Despite many attempts to finish this overpass, it has been abandoned since the 1970s.

In this truly magical place, rent hasn't been raised since the year 1520.

This riverside restaurant has been serving customers since 1146.

A sudden, striking cluster of hills south of Padua has been attracting visitors for centuries.

A small window on Via Piella offers a lovely and rare peek at Bologna's lost canals.

Originally envisioned by King Ludwig II to rival Versailles, Herrenchiemsee's "New Palace" remains half-gilded for lack of funds.

A meteorite-bounded town in Bavaria.

Among the ostentatious rococo ornamentation of this church, an image of death cuts the life-thread.

A small but immensely extravagant palace built by the "Night King."

The tallest residential building in Africa is an unsettling Brutalist monolith.

Two giant painted cooling towers make for one of the world’s most epic bungee jumps.

Caves that can't seem to quit producing the remains of prehistoric humans.

Road signs in Namibia mark the location of one of the five major circles of latitude.

Six ravens are kept captive (but well-fed) at the Tower of London to prevent the fall of the Crown.

Baltimore's classic clock tower was once topped by a rotating, 20-ton medicine bottle.

Medieval torture techniques with a modern conscience.

The prototype for all Nazi concentration camps.

Every hour the doors open to reenact the legend of the heroic mayor who saved his town by drinking a gallon of wine.

Horrifically creative torture devices and shame punishments line the walls of this chilling museum.

This artificial archipelago was supposed to resemble a map of the world.

A preposterously luxurious hotel with gold-plated iPads, Rolls Royce chauffeurs, and a staff that trains by watching "Downton Abbey."

The ancient tomb acts as a calendar that keeps perfect time.

Five sultans and their families rest in eternal splendor, teeming with overlooked beauty and drama.

A marvel of Byzantine engineering under the streets of Istanbul.