Visitors to London can ascend a walkway over the roof of the O2 (Peninsula Square, London; phone +44 161 385 3211), formerly called the Millennium Dome. (The shell was completely redesigned; only the roof was kept.)

The climbing surface is made of a tensile fabric and leads to a platform 52 meters (170 feet) above the ground at the top of the structure, with views of the Thames Barrier, Olympic Park and Canary Wharf.

The 380-meter (1,246-foot) guided tour takes 1½ to two hours...

The silent-running, 2-seat Roadster 2.5 Tesla accelerates from zero to 60 in 3.7 seconds, and the one-day use of this electric sports car can be arranged with a stay at La Resérve Genève Hotel & Spa (301, route de Lausanne, 1293 Bellevue, Geneva, Switzerland; phone +41 22 959 59 02, fax 59 60).

Available year-round to adults over 25, the “Tesla Drive” package includes daily breakfast and spa access. A minimum stay of two nights is required, as is a refundable deposit of CHF8,000 (...

In July, the Supreme Court of India banned all tourism and business activities within the “core areas” of all of its 25 national tiger reserves until states comply with the “core/buffer” management strategy laid out by the National Tiger Conservation Authority (NTCA) in 1972.

Protected core areas of at least 300 square kilometers are where tigers can find water, shelter and prey and breed in safety. Around these are “buffer areas” in which limited industry (logging, farming, grazing...