| SMITHSONIAN | Institution at Washington DC which comprises a national museum, zoo, art gallery and observatory (11) |
| ROME | Italian capital, site of the Colosseum, St Peter's Basilica in Vatican City and a national museum of pasta (4) |
| GREENWICH | London borough with and observatory (9) |
| PRINCETON | Institution at which this puzzle's honoree earned a Ph.D. in mathematics |
| NYSE | Institution at 11 Wall St. |
| CHARM | (and 6 Across) Institution at which spelling might be taught? (5,6) |
| IRONMAN | Which event comprises a 2.4-mile swim, a 112-mile bike ride and a marathon? (7) |
| BUCKLE | A usually metal or plastic fastening for a strap or band that comprises a rim and a tongue (6) |
| KELVIN | Knife edges could be revolving art gallery and museum (11) |
| GROVE | Knife edges could be revolving art gallery and museum (11) |
| UFFIZI | Art gallery and museum in Florence housing master works including Botticelli's Primavera, (6) |
| LOUVRE | Paris art gallery and museum |
| ACARI | In zoology, a large order of small arachnids which comprises mites and ticks (5) |
| FZERO | Nintendo racing series whose name comprises a letter and a number |
| TBONESTEAK | Beef cut that comprises a New York strip and a tenderloin |
| AGAPE | Open entrances to art gallery and pottery exhibition |
| BASILICA | Fawlty towers above art gallery and church (8) |
| SILVER | Metal which comprises 92.5% of the winner's gold medal at the Olympics |
| KLOSTERS | Swiss ski resort which comprises the villages of Platz, Dorfli and Brucke (8) |
| BROADWAY | Friend on a date at Washington, heading to York Street, famous for its theatres (8) |
