The phrase "tallest skyscraper" refers to a building that is the tallest among all the other buildings. It means it reaches a greater height compared to any other construction of its kind. Full definition
My sister and I decided to visit Au Sommet, which is Montreal's Observation Deck, and the second tallest skyscraper in Montreal. (lindatenchitran.com)
Shanghai's architecture is also worth checking out — the city has undergone a massive urban renewal over the last few decades, and boasts the world's second tallest skyscraper. (travelandleisure.com)
It's true, as I found out a few weeks ago, the famed Star Ferry, servicing cross-harbor trips in Hong Kong's Victoria Harbor since 1880, costs under $ 1 and offers one of the most spectacular views in the world (if multi-colored, mind - boggingly tall skyscrapers set against the backdrop of a verdant, steep mountainside is your idea of picturesque that is). (theexpeditioner.com)