A UNESCO World Heritage site, the Old Town charms with its colourful townhouses and the exceptional atmosphere of its narrow streets. When in the Old Town Market Square, you'll meet a mermaid — the official symbol of the city. Don’t forget to see the Barbican, stop by the bell on Kanonia Street, and walk along the old city walls. You should also visit the Royal Castle. Apart from the royal apartments, the old seat of Polish rulers also houses an art collection with paintings by Rembrandt and Bernardo Bellotto, also known as Canaletto. One awesome way to quickly see all of Warsaw is with a tour in a tiny yellow retro Fiat 125p. Of course, you can ask the guide to tailor the drive to your interests.

Hawaii’s most famous landmark, the Diamond Head, is a volcanic crater with a 360-degree view over the island, and its name comes from English sailors who thought its calcite crystals were pure diamonds. The scenic hike up to the summit, taking the so-called stairway to heaven, will not be soon forgotten, and so it happens to the views from atop.

The two-mile stretch of beach south of central Honolulu is the island's main resort area and, thus, one of the biggest draws for tourists who flock here for laid-back vibes, gentle surf, dining, entertainment, nightlife and shopping. Lying in the shadow of the Diamond Head makes not only stunning views but also an easy access to one of Hawaii's most famous landmarks.