Blue

Madison, Wisconsin, United States

University of Wisconsin Science Hall

This historic hall has educated many a famous scientist, and is still in use today.

Chicago, Illinois, United States

Lake Shore Place

This Chicago building, once the tallest in the world, was once the headquarters of Playboy Enterprises. It became known colloquially as the "New Playboy Building."

Barcelona, Spain

Montjuïc Cable Car

This cable car in Barcelona celebrates its 50th anniversary in 2020.

Attard, Malta

Villa Bologna

Uditore Fabrizio Grech would say this 1745 country house was built for his daughter, but it was in fact constructed to silence critics of his wealth.

Muscat, Oman

Al Alam Palace

This royal palace in Oman is owned by the Sultan, who has retained the property through eight generations.

Fremantle, Western Australia, Australia

North Mole Light

The North Mole Lighthouse is one of a pair of "twin" lighthouses found at the entrance to Fremantle Harbour in Western Australia.

Barcelona, Spain

Port Vell Aerial Tramway

Decimated by the Spanish War, this tramway was restored in 2000 to serve its intended purpose: a tourist attraction offering exceptional views of Barcelona.