Museum celebrating the ocean, with the largest wunderkammer dedicated to sea exploration.

The opulent home that inspired Tintin's Marlinspike Hall and the adventures within.

This bridge was constructed from the rubble of the infamous Bastille.

Two geological phenomena in one precarious locale: a towering stone window, and a deep blue void.

This Stone Age solar temple aligns with the sun on each equinox and solstice.

This unique building in the main square stands out among the city's typically Baroque architecture.

The remains of a 1st-century aristocratic Roman town house featuring beautiful well-preserved mosaics.

The only visible reminders of an elaborate engineering project that kept the tower from reaching the tipping point.

This private skyway is filled with art and was expanded explicitly so that Hitler could appreciate a river.

Five candy-colored villages on the Italian Riviera.

For hundreds of years, this huge figure has been blessing visitors before they explore his body.

This half-finished "city of toys" was almost Italy's own Las Vegas.

Da Vinci's equestrian statue, 500 years in the making.

As can be expected from a centuries-old church built in a canal city, the undercroft of this house of worship is beautifully flooded.

Go inside to really appreciate this 500-year-old technological masterpiece.

This community on a small Venetian island has taken to painting their houses in bright neon hues.

This Venice bookstore has resigned itself to constant flooding by keeping its books in bathtubs and boats.

On the Spree bank, discover one of the last reminders of a symbolic wall that divided, and was torn down by the people.

Steadily reminding Czechia of its past.

Marked by the hand of the explorer Henry Morton Stanley.

Gargoyle head that brings good luck.

A modern tower, symbolizing the legend of a golden egg on top of the tree of life.

An entertainment center in a huge transparent tent.

Iconic pyramid from famed British architect Norman Foster designed to represent all of the world's religious faiths.