If you're seeking to beat the Sonoran heat but still want to climb the mountainside, head to AZ on the Rocks. As Arizona’s largest indoor climbing gym, the Rocks has walls nearly 30 feet high. Aside from just having fun, the Rocks also offer an opportunity to work on climbing techniques and learn the ropes. Children under 18 must have a signed waiver allowing them to climb.

A combination of spectacular plays, amazing operas and national celebrated concerts — that's Theater Aachen. It takes you into the land beyond the limits of everyday life and invites you to encounter with characters and stories that touch and move.

Aachen Cathedral, one of Europe's oldest, was commissioned by Emperor Charlemagne. He has been interred here since 814, and his legendary throne has not been moved in centuries. The Palatine Chapel has been a significant site for the coronation of German royalty and remains a key pilgrimage church. Its rich cultural-historical architecture makes it an essential sight for every visitor to Aachen.

Pulau Ubin is an island northeast of mainland Singapore. Cycle trails and hiking trails criss-cross the hills, taking you past the disused granite quarries into traditional villages known as 'Kampongs'. Bright blue kingfishers and bulbul songbirds inhabit the tidal flats of the Chek Jawa Wetlands. See a different side of Singapore with a guided kayaking tour. Soak in the tranquil environment while learning about the ecosystem. All equipment provided and no kayaking experience is necessary.